Performance Modifications for the Classic 900
I ordered the 5-bolt flange for my T3/T4 turbo to make a downpipe with, along with 2 180 degree 3" J bends from Summit.
The flange's opening is 2 3/8", and I'm not sure I'll be able to just put the 3" pipe over the hole and weld it without clearance issues for the bolts.
Where can I order a...