Ok so i have a few questions about the ZC engine, more specifically the block. Right now i have a ZC block with a Z6 head, its boosted with forged Vitara pistons (8.6:1) and eagle h-beam rods. Now i was hoping someone could help me figure out how much Hp can stock ZC sleeves hold?.. mainly before i have to look into sleeves or block guard? I am also looking to get new pistons with a much higher compression 10.1-10.4:1 but im not sure what brand pistons are good/ who really makes good pistons for a d series. Now ive tried researching and i cant find any wiseco/Arias pistons for a Dseries. I checked ebay and all they have are vitara's. I got my pistons off ebay but it wasnt just a bot posting them, it was an actual seller who had reposted them brand new still in box, because of whatever reason.