Are those Dakota wheels on the rear axle now? Original Dakota wheels have the wheel mounting flange about an inch behind the front tire mounting surface (I'll post a picture of a Dakota wheel, front silver wheel is Dakota, rear black wheel is not.)
Early (66-70) B body rear is the most narrow 8 3/4 rear axle (other the the A body 8 3/4 that has the wrong wheel bolt pattern).
Other options: Jeep Cherokee, 73 & newer A Body ( disc brake car has 4 1/2" bolt pattern).
Non Mopar: Ford Explorer 8.8 has 4 1/2" bolt pattern, newer ones have disc brakes, and limited slip with 3:73 gears is pretty common, and with the correct rear end yolk, you can bolt the small Mopar u joint up to it.
Yes they are Dakota stock wheels on the axle pic, I took them off and measured mounting flange to flange and came up with 63" and Plaza is 60" .
Nice looking car you building
love that roof line
