The gasket you need is the '72-'79 intake set. Felpro part no. MS90205. The center holes for the crossover are "small" on both sides to assure a complete seal. The gaskets with the "taller" hole are for the earlier engines ('71-back) and require "special" work to seal off the crossover heat. Your Edelbrock Performer has the "smaller" holes on both sides.
