Best quality, period.
Nevermind the fact that GS is literally the ONLY company that makes a high flow replacement for the stock manifold crosspipe; this thing is made to Grimmspeeds usual ridiculously high standard of quality. The flanges are pure artwork and the welds are uniform yet beautiful. The added touch of the GS logo welded on a piece that you will never see after installation just highlights the teams dedication to their craft. I can't thank Justin and the team over at GS enough for being a company I can trust 100% I pretty much just want to install everything you guys make for my 2006 WRX! I can't get enough Grimmspeed in my life!