If you get really desperate and are willing to go somewhere out of sd, there's a nissan mechanic that my dad has been going to for the past 19 years. He is located in Pasadena. They are knowledgeable with sr20 powered cars; I take barney there when i need major work done. And they will install aftermarket parts on our cars depending how well they know you, sometimes they'll do it for dirt cheap or free. If you need more info on them, let me know. the shop is called "Autotech by Beck"