i have a 91 classic, and my battery went flat on me twice the past couple of days.... my question is what is the typical current draw at the battery when the car is off? the only things i could think off that might still be pulling juice is my alarm and headunit, but that doesnt drain a battery overnight! any ideas anyone?

Alternators have a bad rap around here. I would check to make sure your alternator is charging the battery properly when the car is running. It seems to me that is what is causing the battery to drain.

Brent