Hey guys, just a beginner when it comes to doing mods and I have done a bit of research. Car is completely stock right now but my engine has recently blown so I'm replacing. Just wondering, since I have downtime and the engine is going to be out anyway, which would be the best mods to add during this time for reasonable price? I'm thinking along the lines of exhaust(high flow cat/header), pulleys, and reflash. I've never really done mods myself but I feel as if the header etc would be easier done if the motor is coming out anyway. Any input would be greatly appreciated.