Yes it should work. Mine is a 77 and I don't see much difference.
The Lincoln rear discs will be big bearing axle ends Has your 75 got the big bearing pattern?? If not, it will be some work.
Hboost should fit with little or no problem if your not running a mountain motor (351). If you are, you have to offset the MC/hydroboost.
Hope the PS pump is a saginaw? If not, dont bother taking it, your present ford pump is the same.
TOFIC