Reply to "Reversing ZF axle shafts"

If your particular Pantera simply cannot provide enough exhaust pipe clearance around halfshafts and/or antiswaybars, consider that one of the car magazines (I think) ran a series of tests on various exhaust systems using a SBC mounted on an engine dyno. After the usual small gains & losses from the different headers & muffler systems was recorded, sort of as a joke, one of the participants asked if small dents had any effect.

So they whacked one header pipe with a dull ax, producing a dent that was about 30% of the tube dia. The next dyno run showed NO MEASURABLE EFFECT from the visible restriction. Getting into it, they eventually smashed ALL 8 of the header tubes; still no effect on power even when one tube was nearly pinched off.

If you accept their results, adding small dents in the pipes to clear unavoidable metal-to-metal contact around our rear suspension will likely not slow down your next WOT Silver State run much if at all....