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I have a 69 with HP manifolds.
Adding TTi 2.5 exhaust with H pipe ( Incase I install a GV OD).
Wondering if adding cutouts will sound good? Or if the only sound good with headers.
I’m also installing the Black Widow 250 mufflers.
Thank You
I have tried 4 times.
I tried copper RTV.
I made sure both surfaces are smooth and flat with a straight edge.
I torqued to 35lbs and increased to 45lbs.
Dang thing still leaks.
I’m tempted to pull the manifold.