I decided to redo everything possible on my corolla and i was wondering what is the biggest engine i could put it in, it does have a 1.8 now, i'd like to put a 2.0 or 2.4 in it. And would this also involve me having to put another transmission in it, or should i just do it anyways, i have 83,000 miles on the car and everything is still completely stock, thank you!!