no worry its ok spoke to specialized engines this morning he said they are the same the only diffrence is the cam and the fowlers are diffrent the heads and rockers are the same he said i need to adjust the tappets for hydraulic tappet settings they are preloaded so slightly diffrent to mechanicalim sure my block was out of k reg which would make it hydraulic cam plus it was running lambdas aswell so i just need to find out how to do the hydraulic settings