From personal research and public opinon, the td04 seems to be the popular choice, so I was going to go with that. From what I understood, you need the WRX intercooler, uppipes/downpipes, as for plumbing everything in, I'm fairly clueless on that. So any advice would help
I was also afterwards going to ask about the best suspension parts to put in for local autocross? Or should I go get a miata Personally, I prefer the subaru.