You'll probably either want a bigger alternator, or if the car is mostly used on the strip, I would install a yellow top.

I run a stock alt and a single red top and if I run my fan a bunch between rounds it will kill the battery. I had to get a jump more than once in the pits last year to make it back around for the next round. I'm adding another red top or a different alternator for this season. Might even do both to be safe.