Awesome project!!!! ImpOnAir it's a non CAC (Charge air cooled) 12 valve out of an 1st gen, and early second gen pre 1994 dodge, could be wrong on the year.
without a CAC your going to want to put Methanol injection on it if you turn it up at all... I strongly suggest running a EGT (exhaust Gas Temp) sensor and gauge, and put a different fuel filter/ water separator Maddawg or FASS. The old timers say it will run the best and still get good mileage at around 20* btdc (before top dead center) timing.
I've seen one of these put down 1200+ HP and do it for a long while, with a balanced stock bottom end. They haven't changed them too much since they came out, if that tells you anything. need any torque specs or insider info drop me an email
bdt_00_buckshot@yahoo.com