Hey, 6spot, thanks for you input, I need all the help I can get! The motor is a 2.8 with 8.5 - 1 ross pistons, so no gasket spacer. ARP hardware around the house, stock cams and fuel pump, rising rate fpr, Avcr controller. Good looks on the C2 stuff, but I believe, that stage two kit is only for obd2, where I have obd1.