I am running a 95 with 300s #5 4k I am running a turbo with a larger ex housing I have a low rpm shutter I was thinking about putting 181s or 191 in it to clear up the shutter I'm eventually going with something around 370s and a larger turbo what's my best bet

 

181s will do just fine for what you have. 191s get way to hot.
I think I saw a set in the classifieds.

 

Im running the 370's and a HX40/16 great combo!

 

yea i think that i will go with 181s i was goin to get the ones on here but they were gone before i could get to it is there a part number for the hx-40 with the t3 flange