i don't think your motor would blow if you cheap out on certain parts... just make sure you get the correct fuel management and a good tune. cheap parts might not last as long though. if you want cheap parts, i got an ssac externally wastegated turbo manifold with a t3 flange for sale. $80. I cheaped out on my sohc and it lasted 2 years daily driven and daily abused at 11 psi, then again it was a y8 bottom end...