I have my home office torn apart for a overhaul, so my notes etc are in box's down in the basement, but I'll see if I can dig it out.
I used two old torsion bar from our sprint car, cut them down and screwed a heim joint on both ends making them adjustable twisting by hand,I removed both shocks, replacing them with the torsion bars. I used four electronic scales under the tires, so now I could adjust the weight on each corner by moving the bars up or down, to almost perfect weight bias front to back and per corner. Very easy, and that's with the heavy 428FE.
Once I had the bias and ride height the way I liked it, I measured the length of spring needed and bought the coil overs from Speedway Motors here in Lincoln Ne. They helped sponsor our sprint car for many years. Good people !
QA-1 Perma Star's.
Coilovers - Free Shipping @ Speedway Motors