A friend is giving me his aunt's old 1975 Cadillac Fleetwood with the 500 c.i.d. engine in it. I'm thrilled. However, this will be the first smog era big block I have ever worked on so I have some questions. Can a smog era engine easily be awakened into something akin to a 60s big block? What can I do to wake the engine up, so to speak, and what is a reasonable performance goal to shoot for? Thanks!