I have an 85 efi with a rod knock,can I use an 86 carb long block that I have now? Will it run ok? I know that the heads are different but how will it run? Will it have good power? I know it may not have the same power as the original efi engine, but will it have the same as the carb engine? I want to spend the least amount of money right now and maybe rebuild the efi block later.I just need to get the truck running cheap.