naturally aspirated, non stroker, 60 over, 360, 500hp, is it possible?

ET is about getting the car to LEAVE. First 60' is VERY important to ET you will observe.

If your car MPH's better than about 102, it's got 12 second potential. If it MPH in the high 100's (107-109) and it's not running at least 12's, it leaves the line like a dog.

350fwhp in a 3250# car will run 104-105.

IMO, your car even with the stock HP manifolds should run in the high 100's or better. If it made 451hp, that's should get you in the 115+ mph range.