The attached photo is a pretty tidy install but I can't tell where the specific lines run. If this is your car, can you please post another photo or two of the line routing into the linelock and prop valve.

Anyone else with tidy installs is also welcome to post. I'm trying to not mount anything on the sheet metal (firewall or inner fenders) or frame rails.

I'm not interely clear as to what you're asking, but proprtioning valve goes to the rear tires. It limits maximum pressure to help prevent lock-up in a panic or hard brake.
Line lock traditionally goes to the front tires.

OP
Usually the rear port is for the disc brakes, the front for the rears. Their should be no 10lb. residual pressure check valve in the disc brake port

I thought I was pretty clear ... that I want to see how he ran his lines. I'm well aware of what goes where.

Pretty sure thats Sean, HardcoreB's car...

I mounted mine on the other side of the proportioning valve (used the existing mount).

I'm trying to not mount anything on the sheet metal (firewall or inner fenders) or frame rails.

Here's where I mounted the proportioning valve:

Why?

Because I can !!

Only in America

I totally get NOT drilling holes to mount stuff - I'm generally loath to do that myself.
Race cars are a different matter, but even then I try to avoid it.
I have drilled holes in race cars when serviceability dictate them and the car will never be restored to stock, but not on my street/restored/minty stuff.
That photo shows an elegant & compact installation.

Well, I don’t live in America. And I hate drilling holes in a panel today only to have technology change and have to drill new holes next week! Not that a line loc or prop valve is likely to change any time soon but you get my drift. And I just spent WAY too much on paint and bodywork to start drilling holes in it !!

No insult meant about living here in America
Planning and prefabbing help prevent unwanted holes and changes later after you get upset about where a race part is mounted, I mounted my aftermarket purporting valve in the brake line going to the rear end under the floorboards around the tranny crossmember

Sorry I haven't logged-in to notice this post. I used an offset master mount plate I believe from AndyF? Then I made this plate to mount the prop valve and line-loc. I'll get more pics if they help but currently this is all I have...https://board.moparts.org/ubbthreads/ubbthreads.php/ubb/download/Number/358717/filename/20170122_000346.jpg

Tried to link the pic which is on the first page of the thread I made called 'Build Share' in the members projects section. That MC has transverse thru holes which I used for long g8 1/4x28 bolts which mount the plate I made after laying out the packaging to accommodate the tightest bends using hard line. I already had my headers made and engine permanently mounted so I routed the lines respectively. I used the factory frame tabs for the front lines and then ran -3 braided Earls to the calipers.

I did this for all those reasons AND if there's a leak at a connection...it'll be away from the paint.

In the photo on the link it looks like the prop valve is plumbed into the line loc. so are you using the prop valve on the front brakes or the line loc on the rear ??

Rear port MC to prop valve IN. Prop OUT to line-loc IN. Line-loc OUTLETS to front brakes.

My p valve is just right of the M/C