Sharon,
I liked the Fenton intake for dual carburetors because it bolts up easily with the Fenton headers - no grinding.
Get Langdon's carburetor linkage. If you need the throttle-rod (from the bell-crank to Langdon's linkage) ask here for the link/part-number for a universal rod.
ironhead,
I did not try rejetting. Yes, I'd say that pair of carbs is too small for your 302. Maybe two 228 carbs? Or, the single two-barrel AA-1 Holley that was used on 302s (variable jets are available)?