are they using mazda miata pistons, or nissan ca18.
I know custom forged stuff is also possible but I was thinking of off the shelf parts.
sorry but i am a typical corolla owner, cheap.
Gary

What is the maximum bore possible on a 4ag block. heard the 7a block is thicker. the black top 20 blocks thicker also? I have seen 83 mm headgskts available so I assume it is done. I have also read storys of 84 and 85mm bores, dont beleive everything on the internet? plan is to build a 83mm 7ag. sto...