big block chevy headers?

[Ratpowerd67]

humm, id say if the spaceing between the tubes are close enough to the same.........cut em up!. even if they need some bending here and there, cut off the bbc flange , cut some slices in the tubes to make easy bending, then make some tack welds if needed. bend the tubes one at a time and get it close to the lsx flange but do not tack the flange on yet. bolt the lsx flange to the head, then position the flangeless headers where you want them and tack it up. remove the header as a whole and weld it all up. just an idea............ good luck jim.