The Motown missile program was an engineering feat, my personal rack and pinion conversion was modeled directly off the notes from that program (given to me buy the guys who lived it) they use both pinto and Mustang 2 racks depending on the car A or E body and on who did the chassis or by which aftermarket company was making the rack as well versus using an OEM one that was modified. There were certain stationary measurements that had to be made off of set points. One of which was by lengthening the lower ball joint Ty rod mount so far forward either by lengthening or replacing the piece altogether. Also additional angles that were taken into account because these cars were running offset front suspensions for deeper rollout