Low-deck header woes...

MADDOG Headers
3900 S. Allen Rd.
Allen, MI 49227
(517)869-2308
Cell: (517)250-4487
Fax: (517)869-9012

Mark is great to work with. I did order a set of his headers for my son's 68 Dart 383. I too ran into fitment issues even with his headers and also ground clearance was a big issue.
I called and talked to him about it...What we did was I sent the headers back and he sent me a boat load of stuff so we could build our own..

Rick