Using LX (New Charger/Magnum/300) Wheels on a 74 Dart

i tried to put the wheels from my brothers eclipse on the scamp. same bolt pattern and the front was ok but the rears hit the leaf springs. did any of yours do that? they had almost full backspacing like most fwd cars but it looks like so do the lx cars. i found a set for the scamp but wont be able to test fit. they look caal and would be nice on the scamp if they went on right lol