Thanks for the kind words guys[:p]
Matt, the pistons are made by Cosworth, they are their Std 4wd piston. The advantages over Mahle with these are the polished crown, valve reliefs, anti friction/oil retention coating, anti det bands on the first ring land and the expansion groove in the second ring land. Basically they have the latest technology built in. This is actully the 10th revision on piston released by Cosworth, they revise the pistons every couple of years