Who is running a blow through system? Pros and cons for the street.

I am running blow through in my Nova.
I like it. It was an easy mod for the carb. Hardest part for me was making sure it sealed for the air pressure... The carb hat I made first wouldn't keep the seal in place under pressure. Version 2.0 worked much better!
IIRC, I used 6" schedule 40 gas pipe. 6" OD with not quite 1/2" wall. Fit the carb perfectly!!!
The whole thing only cost me $20 because I welded it myself.

Intercooler is on it's way. See if that makes a difference.

It think blow-thru is the preferred method for turbo setups. I've done quite a few back in my 5.0 Mustang days, and I wouldn't even consider doing a draw-thru.

Draw through is good for cheap low boost street setup. Those Grand Nationals were pretty impressive.