The square flange M1 was cool. The Indy 360-3 is a bad *** also. If you are interested in an Indy intake pm me, I've got one about $100 less than new. My motor was also stock stroke
I do like the Indy. I have an old W2 Strip Dominator. It needs some spacers made as it was milled on the head side. Seems like every used engine part I buy is overly milled.