i could use some help. i have aluminum small block center bolt heads. they have angled plugs and roller rockers. they have the following casting numbers 10088113 and 6006. could someone help with identification. any info would really help...thanks in advance al

Mortec says this..... 1988-up 350 58cc angle plug,Raised D port exhaust.1.94/1.5 valves.these are corvette heads I think.hope that helps.

thank you. that was great help.

These are L98 Vette style HO service heads that come on ZZ3 crate motors. GM # 10185087