well, if you want ALOT of compression... yeah, but it would take alot of work to get them to flow like a GT-40 head..seats cut for bigger valves..alot of port work.. I have a set of 66 heads that were done before there WERE GT-40 heads... would trade them in a heartbeat..( no pun
) for a set of GT-40's
------------------
84 convt,'95 302, performer
3.55's, underdrives shorties
and a '68 stang that WAS nasty ;-)