how much did I increase h.p and time in the quarter mile?

If you are seeking to perform modifications to improve performance, it would be best for you to forge a relationship with a trusted performance shop. These folks who specialize in aftermarket upgrades and have knowledge regarding risk factors, bang-for-the-buck and can show you the results of your investment are good friends to make. A good shop can help analyze your current performance and advise you accordingly.

The ONLY accurate way to measure increased horsepower is by using a dynamometer! Lower differential gear ratio does not add horsepower to the rngine.