Your best bet with room for expansion would definetly be a K swap, dont get me wrong B's are sweet but save your money and go K you wont regret it. Soon there will be K's all over and you will feel left out wondering what you could have done. Register on K20A.org and soak up all the information you can. If not a K20 get a K24, they are cheaper and have more torque than a K20. From there you could toss on a K20 head later on down the road. Options are just as endless with K's as they are with B's but if you want reliablity you can have one quick all motor K that would stomp some ass. I ran a 14.1 with a crappy lauch in my RSX Type S I/H/E/Kpro car is about 2800+ lbs, your car is at least 600 lbs lighter, power to weight thats where its at.