Darn near any intake will work with the 1250's. GT-40, Cobra, Explort, Edelbrock Performer & Performer RPM, TFS, Holley; etc. You name it and it'll almost absitively, positutely fit. I've got a GT-40 system for sale right now; upper & lower, 1/2" spacer, new gaskets and all the bolts (I just upgraded to a Performer RPM). Best yet, the manifolds are already gasket matched and milled so they'll work real well with a set of heartily prepped GT-40P's. Any takers? I've even got real recent flow numbers on the combination.
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Jeff Chambers
Trophy Stock #3
11.611 Seconds / 116.7 MPH
Chambers Racing Team