I had a friend that had an ls/vtec and he said the best way to go is stock parts all the way because they are cheap to replace but he blew his first motor 250 miles into it and he hadn't even broke it in and on top of that he wasnt even ragging it out, the second third fourth and fifth motor didnt turn out too different except his sixth motor which he added a turbo to lasted him a good four months before he blew it at a red light not doing anything except waiting for the light to turn green. So thats why i want to BUILD the thing right. that also how i know these things are not reliable unless fully built.