Originally Posted by Barry Built
If I get pro flows I will have to re do canister mounts. I don't want to do that.
Yes you will have to use a smaller dia. mount because LARGE proflows are only 3" dia. and 10 1/2 " long. L90K's are 3.25" dia and 14 1/2" long.
Proflow recommends approx 10" header length for starters for a da.
Header lengths need to be the same.
The stock header length for a 3W-170 on front dump proflows seems to be ok for me