The Pacer X came with a 304ci V8. The location of the engine to the front axle center line is of huge importance. If the engine sits in front of the axle center line, like a Pinto then the factory springs are TOO HEAVY for a small block V8 that sits entirely behind the axle center line. Especially true of a Pinto station wagon IFS where even a big block wouldn't make the A-frames and control arms sit level. We used a Pacer X IFS on a 1940 Packard sedan and the ride was too harsh but some lower rate springs from Speedway did the job. I would not use factory MII or Pinto units as they are formed from several layers of formed tin and have strut rods that are under compression fro lower control arm to a pressed tin frame rail. Tension yes, compression no.

Evan