Hey if your thinking of buying one hold off a bit , i have one on my car Now . Going to a 70 that should be here this week and i will most likely sell the CPT65 BB .63 housing . Its specs are a 61 mm wheel on the comp side and a "P" trim hot wheel i belive its supposed to flow like a 63 if i remember Jacks words right . I ran it with a stock head cam motor 20 deg street chip and 28psi quite often .The car ran 12 flat @ around 112 during the middle of summer at that boost in a Normal weight car with a very soft launch 5 psi maybe at best . I went with this from a TA 49 to run some more boost over 25 psi wasnt giving me a gain with the 49,the Mph went from 108 to around 112 on that combo with a 100k + motor . It spools nicely with a mild convertor 2800 -3000 9/11 conv . On the car now its its pretty violent , GN1s ported with 218 roller cam .( inch conv . I dont have times on it though .