This forum is titled the HiPo Shop so why does everything have to fit right out of the box when you are MODIFYING nearly everything. For years I had a sign over my desk that said, "SWAPS!!! We can put a 450 Cummins on a skateboard if you have A: the Cummins B: the skateboard and C: Cash". The so called MII or Pinto IFS units do not remotely resemble the folded tin units used by Ford but are engineered to be as strong as any factory set up. Qualify this to Fatman, Heidts, Chassis Engineering, and several other ENGINEERED units and not ebay specials. The cross members are a full 1/4 inch thick (Fatman) and the A-frames and/or control arms a heavy wall chrome moly. If somehow clamped on one end and pulled/pushed/twisted on the other I'd bet they would out-tough a straight axle. With the right choice of springs they can dependably be used on big block cars. We cut a trough through a Fatman unit to fit a 2004 Mustang Mach1 4 cam engine into a 1950 Ford woody wagon and it is still running trouble free 15 years later. The trough was reboxed for strength but no additional fish plating was used. I realize not everyone has equipment in a home shop to modify to their need but pan clearance to a cross member should not be prohibitively expensive. Think outside the box.
