after seeing those pics and how restrictive thos small head pipes and bends are either buy the tti headders or run a 340 manifold. those shortty headders are not worth the trouble and mess you end up with..
and unless your pushing a lot more than 300 HP just stick with any regular old exhaust manifold..heck get the cheaper ones NOT the HP 340 ones unless your worried about a whopping 1-2 more HP..id just save the $$$$. Get something like the later 73 manifolds instead its just not worth the price difference for a set of the 70's for 1-2 more HP.