So I have a 1974 260z that I'm putting a sti r180 rear differential into. I've got a mustache bar and control arms from techno toy tuning, along with wolf creek cv axles. When I try to put the front mount of the diff in place it flexes the mustache bar and the differential seems to be tilted too high in the front. When comparing to the stock parts the rear cover on the diff has the studs in the same place and the two differentials look identical. The hole locations and offset of the original and techno toy mustache bars are correct but he factory steel bar seems to have a bit of twist. I can't tell what I'm missing here and wanted some input.
Edited by RB26powered74zcar, 15 December 2016 - 10:37 PM.