Mike,

Yes the rear end is sitting much higher, there
is at least 5 inches from top of wheel opening
to the top of 275/60/15 tire on the car.

The rear shackel (at the spring) is only 1-1/2
to 2 inches ahead of the top (mounting point)

When I had the stock shackels on the car they
were pulled almost level (front to back) but
Bob Mazzolini said I needed to make a longer
shackel to use the MP 456/457 S/S springs.

Yes I am aware that the 456/457 springs are
originally meant for the "B" body, but according
to Mazzolini there were problems with the rear
spring eye opening on the 002/003 and he does
not sell them anymore??