hard to describe big dave. I absolutely LOVE muscle cars. I"m 48 and grew up in the muscle car era. I really don't know didley squat about engines, something i wish i had the chance to learn younger. I know I want to be able to hit the gas and feel like I have a muscle car under me. How much performance do I want. As much as my wife will allow me to spend. I know I cannot pull the motor out and do anything big and I want to do as much as possible and still stay married to the woman that I have invested 24 years in! I am sure this doesn't answer your question because I know from being on this site for over a year that you know ALOT about engines. I just love my '69 convertible and want to enjoy it as much as I can. Any advice from you expeerts is greatly appreciated.