Tincup's 63 Dart w/5.7 Hemi

Theoretically they should fit better. They hug the block closer than aftermarket headers, and the outlets point straight back, the stock manifolds kick out a little. I should know very soon, I plan on test fitting the engine this weekend. I'll keep you informed.
Would either of you guy's have the part number for the extended main cap bolt, the one that the oil pick up bolts to?

The main stud for the oil screen is 6506333aa. the corresponding nut is 6502756. Hope this helps.