ive checked out langdons before, but i am looking for more tubular headers, is there really better performance out of them or cast parts? what would you guys do? for the chasis im working on, its accually a 1963 pontiac acadian. ive never seen a 292 in an acadian, (btw, its just like a nova) if you didnt know. i know, i have to fabricate subframe conectors and such. currently its running a 250 inline 6 pulled from a tractor...somewhere ni alberta...so i have to do some custom things with the motor mounts, i just need the standard mounts, then i have to reloacte them using 3/8" thick steel plate, and move them forward. or is there another solution?