I say it's your car do what you can afford. Me I have a 89 Toyota Cressida that is in the process of swapping my 2JZ. People may say build the 7M but I heard way to many horror stories of 7M's and headgaskets. I have a R154 tranny, MKIII LSD 3.90 rear. I'm going to go GT4088R, A1000 with -6 and -8 lines and 1000cc injectors with AEM v2 to get me to 700+rwhp on E85. Boost is a lovely thing....