I believe the Clifford 194-292 intake 4 barrel manifold is not compatible with the stock exhaust. You have to go to headers.

Clifford intakes are really made to fit Clifford headers. If you have a 63-87 Chevrolet truck then cheaper headers of the same design are made by Dynomax and Hedman. Last time I checked they were about 30-40% less than the Cliffords.

I have a spare set of the Clifford "shorty" style headers, and I currently have the Dynomax long tubes on my 292. I've also seen the Hedman's. If their steel gauge is consistent across designs, then the Clifford's quality is much better than the other two.

-magic mike-