thanks for the info, i have looked for a manual and cant find what im looking for, here in the us we have oem shop manuals that tell u every littel bolt size. but i cant find that for a sierra cosworth, and i have a 2.3 pinto block that should work but no heads, and the cost to order the heads new is about 1200 in us dollars thats a lot for me so i can only gusess how much a fully engine will cost.