[Janusz]

I went through the same process of trying to get a straight answer from Flaming River. Seems that the ’74 thru ’76 MII rack used a three hole mount. The ’77 and ’78 MII rack uses a two hole mount. Even though you can use the three hole mount (same outside centers) the two hole mount is preferred.

Flaming River's MII, GT and Quick ratio racks all have the same tie rod centerlines (45"), but the mounting center is 16" for the MII, whereas the newer Mustang racks mounting center is 15 1/2". I was unable to get any dimensional infromation on the MII rack and was concerned that using offset bushings would cause bump steer.

MII racks use a 9/16-26 input shaft, so if you opt to go with a GT rack, you would use a power rack without the power in order to match your existing u-joint or rag joint. As to lock-to-lock turns, this is a function of both the ratio and rack travel. Flaming River's catalog calls out 4 turns lock-to-lock for their MII rack, Shell Valley used to carry a 3.5 turn lock-to-lock rack and according to one of the parts stores, the original MII's were somewhere around a 4.15 lock-to-lock. Hope this helps.