I know a long shot, but look at these stainless headers on ebay for $155 max, might even go at the $125 starting price:
http://cgi.ebay.com/ebaymotors/ws/e...0187035879&viewitem=&sspagename=STRK:MEWAX:IT
I know the odds of clearing the steering and torsion bars in my early A are very poor, and maybe not even the inner fenders. Still if they could be made to fit with some bending and hammering, a great deal.
At least they would clear a mini-starter since that is the same place (I think) and the Magnum trannys are bigger (maybe not at the bell-housing). Also, Magnum trans to engine braces may be different.