on my 66 289ci...i jus won this h-pipe frum ebay for $76 total. ithink thats a pretty good deal and they in hella good shape. i have two flowmaster two-chamber mufflers...will the h-pipe change the sound at all and how much torque should i xpect outta this H? thanx.

 

The H will sound real nice with the flowmasters.

 

It'll change the sound alittle and it should give you a handfull of ponies possibly.

 

The H will definately change the sound with your Flows.