Manley makes a duplicate of that 1.940 intake, one that's designed to fit a custom cylinder head fora big block Chevy V8. The only difference in dimensions is the location of the keeper groove, which can be added by a quick, simple plunge cut with a parting tool on a lathe. The part number is 11583-1. Get ready for some sticker shock- - - - -they're E$$$$PENSIVE!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!