Interesting. '71-'72s used square aluminum seat-spacers so obviously they aren't welded. The fronts are slightly thicker than the rears to give a tiny bit of rake. But the holes in everything are oversized so it should be possible to loosen bolts & shove the seat toward the console and gain a little space. One '74 needed lots of clearancing; it had Ferrari seats and hit everywhere. I file-elongated some holes, swapped the lower phillips screws for metric flatheads, countersunk the seatbelt plate and bevelled the plastic F-car rake adjuster knob, all to gain 1/8" clearance. Pantera seat pans are narrow!
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