I built a 51 3100 with a 350 and the stock straight axle. I rebuilt the
entire suspension, including new bushings in the spring eyes, and converted
all of the ball studs on the steering to modern one piece units. I added
power steering and steering column (shortened 6") from a 73-78 Chev pickup.
Disc brakes on the front, and a power brake booster made it stop very well.
The rear end from a 67 to 73 mustang is a bolt in. You have to reverse the
rear springs and the rear end fits on the springs and is placed correctly in
the wheel wells. This combination with BFG radial T/A's drove and handled
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959