Sorry to say it man, but the guy took your money unless he can provide you legitimate receipts and part #'s from ford racing. Trust me on this as I did get custom rods for my 3L and also searched for aftermarket pistons (none made currently). Rods were $1100 and pistons would be just a little less. For the $1300 he probably figured you wouldn't question it too much whereas the real cost of $2300 +/- would make most people ask a few questions.
In any case go to the shop and request to see part #'s and receipts for the parts he said he put into your engine. It is possible he used the stock ford SVT engine parts- piston assemblies are roughly $200/ea at this time. If he wrote down that these are ford racing products then it's a scam if he wrote down ford parts then he's got you.
Rick
