Last post here before I move on. Met back up with the previous owner today at his dads house and cut out the junk cat and welded in a straight pipe in it's place. You could barely see any hint of light through the cat and there was visible blockage of the honeycomb at both ends. This thing revs so smooth now and the boost comes on smooth as well. This car is a blast to drive now. Peaks out at just over 10psi as per the stock boost gauge and in third gear from about 35mph will push you back into the seat. Will be making the 380 mile trip to Fallon, NV tomorrow so will get to see what it gets for highway gas mileage now with an open exhaust. So far even with a lot of playing I can tell it's getting better gas mileage just by the amount of fuel I've used since I filled the tank this morning. over 100 miles on the tank and still about 1/2 full, where as before was doing good to get 100 mile before I hit a half tank.