I found a super b special on craigslist for a pretty good deal and Im in need of a bigger turbo. What I dont know is if the super b will fill my needs of cooling 550 at the rear. BD website says it will but I like to get opinions from other people than just the manufacture for obvious reasons. If anyone could even tell me what size this turbo is that would be great.

 

I believe its a 64/71/14 An I believe it should cool your set-up

 

I ran the special and loved it. Great mid range power super top eend but a little laggy on the bottom. I could keep the egts down for the most part. I got rid of it because when I towed with it, it got hot and spooled very slow but once it got going it was fine. High elevation sucked. Funny thing is, I made the same on the dyno with the special as I do with my twins its just the twins deliver the power, now. I say get it, you will love it just don't tow big with it.