I assume you are referring to subarus? I don't think it matters which make / model it is anyway, but i'm pretty sure any motor swap is going to require you to run in Open class.Brand new to this forum, lots of good stuff so far. Does anybody know the rules for motor swaps? I've been going through rally americas rules and they don't say anything about it. Lots of turbo regulation info but thats it. Any help would be great, thanks.