OK now I am learning. So a Predator motor is not a "clone" motor. What is a "Clone" motor and where do I get one. I have looked on the EC web site and found empty blocks with no crank or any other internal components. I have a "was" built Predator motor on the way, you probably know from where, and it should have a (good enough for me) head, ARC flywheel, carb and clutch. So I will need a block, rod, piston, (and maybe) a crank and cam to put together a FXS motor using the parts I have. This will be a winter build both chassis and motor.
Basically looking for a short block that my parts will fit on. I race with the Texas group and none of us have tried a FXS yet but we have a several members that are interested in building some and giving it a try.