Yep its official im getting a 2.3 built with a K1 racing crank with either a gt37 or a gt42r which i was told the gt42r is very streetable. what do you guys think? gt37 or gt42r?

 

I would go for the 37. Dunno about the 42 being to streetable.

 

i was told on a 2.3 with a small housing it will be fine

 

No, not at all right. A Gt42r being streetable? I would say go GT35r. AMS, Dave, and AL run 42r and they are some of the fastest evos in the world. I have tuned a lot of 2.3s and fitted with the 35r it is a very good match. 42r is just too big.
my .02cents
Mitch Mckee