A lot of folks use a van lower control arm on the d series trucks to drop them 1". Maybe putting a dseries lcr on your van would raise it the same? That combined with some new coil springs in the front might gain you an inch and half or two inches of additional clearance.

I'll need at least 3" for the tires I'll be running but every little bit helps...
I haven't looked into D series trucks but I recon there may be some suspension components that are interchangeable...
How am I suppose to find out what will fit my B300?
How do I find what vehicles have interchangeable parts with my van?

It's a 1 ton van so would any similar year 1 ton Dodge truck part be interchangeable?

I don't want to spend much money to get it lifted

Reversing the pickup lowering plan might work. Search for info on lowering a pickup and then use the truck arms on your van.

You need to confirm if you have the heavy duty front end or light duty. Look at the tie rods, if inner and outer look the same, it's light. If the inner is much longer than the outer, it's heavy.

I had an 80 B300 with the heavy duty front suspension. It also had the 16.5 wheels. I ran the 9:00 16.5 tires on my van, and those would rub on about everything when you turned the wheels sharp. My tires rubbed against the frame behind the tires, and the front inner structure at the inside of the front end. They were also very close to the front bumper corners, and on bumps would make contact with the outer sheet metal in the rear fender dog legs. Taller tires will likely reduce the amount you will be able to turn the front tires.

I don't know how the height of what you want to run equates to the 900 16.5 tires, but anything taller or wider is not going to clear the outer or inner fenders and frame, and a taller tire probably isn't going to clear the floor pan, when you turn the wheels to the right or the left.

If you need the amount of lift you are talking to fit the tires under the front end, it probably won't turn very much once you get them under it. You will take a huge hit on the already long turn radius the B vans have to begin with.

I did run dirt track cars before. You can probably hack out anything that interfered with the tire movement to get the clearance you desire, then build back in the structure you need to make the van functionable again.. At some point, any tire will fit anywhere. How bad do you want those tires?

Dodge made the B vans in a 4x4 configuration during the time period of your van. The 4x4 versions were much higher off the ground then the rear drive vans were, maybe that could be a direction you want to look. You only need to mount the front axle and connect the steering, the rest of the 4x4 stuff wouldn't be required. Gene

That pretty much is your answer. Its not going to happen without radical modifications and parts. Not cheap. By the time you are done you could of found a 4x4 van cheaper.

Sorry I don't know any more than what I shared. You could consider running a shorter tire in the front. Might check into some taller coil springs as well.

Another thing you will find out when raising the front. You most likely will not be able to align it.

When you raise it the tops of the tires pull inwards. You most likely can not get the camber and caster back in specs.

So this is what I've been able to find on the net...
Maybe this will work? These parts and the control arms of a truck I think may just give me the desired lift but I'll probably have to go with 31's instead of 33's...

Ok now other than placing parts side by side to see if they match how can I find a compatible vehicle?
Is there a manual listing all interchangable parts for dodge 1 tons?
I'm kinda hoping someone can just tell me what model truck has the exact same parts my van does, it would help a lot!