T buckets are not very comfortable and very small inside.
not a good choice in my opinion. and really overdone...

I tell people on a budget that a early truck is your best bang for the buck. unless you find a good deal on some sedan or coupe....

I built my Squattie fire truck for under $4K
a few years back.
like a $300 cab
homemade bed and fenders around $300
a $100 318 and trans
a $100 set of wheels
$200 worth of paint
and all my labor, came in way under $4K

finding a 30-38 cab is more costly than a 39-47 or 48-54 cab.
I like the 39-47 cabs, they fit nice on a Dakota chassis
I did mine on a $100 dodge D50 chassis
you could build it fender less and just put a grill shell out front, fender less looks better with some kind of axle
but you could still use a D50 front end to keep it cheap
(my son did that on his rat rod)

you already have the "RIGHT" engine to build a mopar rod with.
you just need to find a cheap start.
39-47 cabs can be found around $300-$1,000 pretty easy

here are a few pics to give you some ideas..


this was My squattie truck: 318/904, D50 chassis




this my sons low buck truck. less than $3K invested and on the road. 400 BB mopar in it.. also on a D50 chassis






My other son did this 40 dodge on a 1975 Ramcharger 4x4 chassis a few years ago.




another fender less old dodge




and full fendered..




and here is a old ford fender less truck for another idea...