Need some advice.
 

After a few unfortunate events , I ended up screwing my front rotor , damaging the housing and front iron too. I needed half an engine , I ran into a good deal involving an abandoned semi pp project motor, the guy (a local racer , who has run a 9.0 in the 1/4) did a beautiful job porting and doing the pp's on the housings .
I am putting in a full J tech intake too , 4 x 1600 's and a pair of 550's with my twin bosch '044's. I am looking to change my turbo too , I want the GT42RS , which of the exhaust housings should I go with , thw 1.02 , 1.15 or 1.22 ??

1.22 call Dee at reactive racing... he nows his shit