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Unfortunately I don't recall off hand what size I ordered, but I know they fit perfect
those look ohhhhhhhh soooooo sweet! I think that might be one of my winter projects! I am pretty sure they are 2 1/16" but you should get a definitely answer before ordering!
Smoked, where did you put the A/F ratio senser in your side pipe set-up??
2 1/16" seems to be what I recall, but I'd need to check my receipts to be sure.
74Vette, my O2 sensor is in the collector where it comes out of the side of the car, it's the only place where you can get a reading of all cylinders otherwise it'd have to be in an individual tube. I know it's not ideal, but it's better than nothing when tuning
2 1/16 for the center.. I used ultra lites.. 5" if you do the tach and speedo. Easiest for wiring os to make your own harness since you will n ot be able to use the plastic circuit board.