head probs

ok i got my heads from ebay .they are edelbrock performers witha casting # 6025 the guy said they were for a 289 ,302,351 the valves were supposed to be 1.9 and 1.6 if you look on there site then youll see there 2.02 and wut ever.but they also have the cross over tube on them for emissions

thats not my prob my rr's dont fit.the hole is smaller for the bolt i took a head stud and put it in the holes for the rr's are 7/16 i was stumped so then i took a stud and ran it through the head hole and to my surprise its way to big almost like a half inch is that the way they come som you can either put them on you 351 0r 302 some one help me figuer out here are some links

http://edelbrock.com/automotive/index.html

http://cgi.ebay.com/ebaymotors/ws/e...&rd=1&item=7910919668&ssPageName=STRK:MEWN:IT

rick so by the time im done with you will i be buying you a new house lol

ok heres wut i figuered out i need head bolt bushings pn 9680

please explain the rr to me the ad says there ment for the stockers

my micrometer is at my buddys house were the cars being built i hope they are 2.02s

they are my arp studs fit in em 7/16 so wut now and they dont look drilled and tapped at all

wut set up shuld i go with does any one have ne links