no.. it won't work... the housings are totally different- i checked out the differences when i had my 74 Monte Carlo on jackstands with the T Type on jackstands right next to it.. the upper control arm moutning points on the mid 70's cars are up on top of the housing and about 6" apart, where the G body upper mounting points are about 9" apart and farther down on the side of the housing..
those UMI control arms are for using a 64-72 A body housing, not the 73-77 housing..