A lot of formerly fast D/S cars sure let their voices heard when I had them all covered and in the process had a Dana 60 under my D/S '70 AMX! Apparently the fact that AMC was bought by Chrysler in 1987 meant nothing and it was a corporate merger. Corporate rear ends have always been allowed.
That means corporate, not anything else so no 9" Fords under an old Pontiac.
As mentioned earlier, that's just part of the game and if your choice of ride is limited in this department, look at something else! Or another alternative is to make what your offered work. Anything can be made to work with cubic dollars!