Can anyone tell me if these heads : http://cgi.ebay.com/ebaymotors/CHEVR...#ht_1787wt_937

would work as the EQ Vortec heads Enginequest CH350C
featured in this article? :
http://www.popularhotrodding.com/fea...ine/index.html

the intake and runners are just a little smaller. does that make much of a difference?