The issue seems to be with the clutch linkage and pedal as it shares a common shaft with brake pedal. The clutch pedal mounts outside the frame and uses a bushing located in the top of the frame rail. The bellcrank mounts to the rear side of the engine block just in front of the bell housing and the clutch rod pivots from this. Keep in mind that I still have the original crossmember in place and have added a trans crossmember as well as side motor mounts. I don't use the motor mounts on the bell housing and the engine has been moved forward about 1.5 inches(to clear the HEI better). I see no problems with the headers or the original crossmember. The only conflict I see is the brake booster and mastercylinder using another mount for the brake pedal. I'm sure that someone else has come across this problem before, not everyone uses an automatic trans with power brakes.

~ Craig
1958 Viking 4400
"The Book of Thor"
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1960 Chevrolet C10
"A Family Heirloom"
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'59 Apache 31, 327 V8 (0.030 over), Muncie M20 4 Speed, GM 10 Bolt Rear... long term project (30 years and counting)

If you don't like driving yourTruck, you won't drive yourTruck..| Living life in the SLOW lane