A full new exhaust system, manifolds back, did not increase the apparent power. The thermostat, timing set, and Turbo Blue 110 definitely did. The fuel economy is also up to around 16 mpg if I keep my foot out of it.

An exhaust leak that I hoped would be solved during the exhaust replacement turns out to be a leak on the passenger side between the manifold and head. Is this a common problem, and if so are there any on-car fixes? I have A/C and can't even SEE the manifold from the top.

Also, from underneath, the driveline does not appear to be "square". This is the first time I had the car on a hoist. The axle appears perpendicular to the axis of the car, but the driveshaft appears to cant off about 2 degrees to the driver's side of center by the time it reaches the trans tailpiece. Comments?