I guess they're okay. Not super impressed. A couple of outside exhaust ports were cast so close to the bolt holes the gasket is blowing out on the dyno. We will install aluminum studs into the bolt holes, finish them flush and move the bolt hole over in the head and header to get more sealing surface. Yesterday's 2nd dyno run was 523 lb-ft and 532 hp. Today was 541 lb-ft and 572 hp.
