After about a year, Im ready to get the Z running again. Just need a couple more things and Im good. Mainly I need guideplates, and Im a little unsure on which ones. In my looking I have come across a couple that would require machine work to the heads. Hopeing to avoid that...

Here's the lowdown.
P&P stock LT1 castings
Milled and CC'ed
Comp 1.6 NSA RR's 7 /16"

Part numbers, websites, advice, all is appreciated. Thanks.

 

GM p/n 14011051. No machining and has the correct spacing.