Great project -
Just a comment. That's the wrong roll bar for that Jeep. The bar for a '73 sits entirely on top of the wheel wells. With the tube between the seat and the wheelwell, your leg room will be even less than it was with the original seats. And you may have trouble with the wheelwell notch with the roll bar in the way.
1) '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS, hubcaps. 2) '82 J20 360/T18/NP208/3.73, KOs, 7600 GVWR 3) '75 CJ-6, 304/T15, PS, BFG KM2s, soft top 4) '95 VW Golf Sport 2000cc 2D