^his right you have to have the engine honed again after you install it.i have only done 2 turbo sohc motors i myself use a blockguard in every motor"thats not stockrebuilt" building a sohc for turbo sucks.buy a ls motor..unless you find a old set of the eagle rods with the Edge sloped and 5/16bolts then you will need to cut the block"also has to be done b4 honeing/boreing"