Im sorry I have been looking around but just keep getting confused

I plan on doing a blow through system on my 12a streetport.
I will be using a 45DCOE Weber with the set up and most likely just go with the rotary-works turbo manifold instead of going threw the trouble of making my own.

If I use their turbo manifold it is set up with a T4 flange. I dont know the difference between turbos as I have normally been a N/A type of guy. So if someone has a good recommendation it would be greatly appreciated.

Also if I missed a super obvious thread that answers my question feel free to link and flame me I tend to try and figure **** out when its way to late lol.

I only plan on running around 5lbs of boost so nothing crazy.

Thanks again!

 

Why not try a 2nd Gen TurboII turbo. Yea it doesn't answer your question in regards to a T4 flange but there are plenty of threads in the first gen section on how to make a stock TurboII exhaust manifold fit a 12A. Also it wouldn't be hard to take the flange off any tubular manifold and make a flange to match the TurboII turbo.