EZ's will work with Ron's existing header set up, which to me is their big advantage (IF YOU ALREADY HAVE HEADERS)...Otherwise I too would go with the SR's, they'll make more power (that stock exhaust is costing Something in terms of peak potential), The SR is my favorite of all the Indy heads.

Ron What gear will you be running? 4.10-4.30? Is your car a Dana? Hope so!