[Zoomad75]

I've got headers on my K5 (75) with the manual trans. No linkage issue. problem is the PO put them on and I don't know what brand they were. They are old, rusty and I've had to booger weld some holes shut in the collector so I wouln't even recommend what I got, even if I knew the name.

Given the crap I've put up with on these headers I'd say get another manifold to replace the cracked one. Stock manifolds are a dime a dozen and fit from 1973 to 1991, probably above and below those years too.

I've got stock manifolds for mine to go back on when I have some dough to redo my entire system. Warped header flanges and collectors SUCK!