Man, these threads pop up all the time. The ODO .21, B5, and Alpha's are all good engines for around 2 bills. Keep in mind, you usually you need a specific pipe for them to work to the fullest potential, which will set you back about $50-$70. The Nova N21R is also a decent motor for even less money, paired w/ and 086, it would work just fine. Everyone of them have proven themselves, so pick one and enjoy. Just my .02.
