Excellent idea Randy! I checked Accurate and they have the 2 1/2" flanges. I beat the crap out of my pipes when I went to the 440 so I want to clean everything up and also install an H pipe.Is it even practical to try and run 3" off the manifold? BTW, I found my engine problem, loose torque converter bolts (like hand tight, doh!) I also found a guy to build my engine to go 12's at a decent price.