I also have a virgin block 383 bb but my concern is if i could handle it cuz id be going all out on the motor. 496 stroker kit from 440 source along with the super stealth aluminum heads. cams an intake are once again unkown. im to familiar with the upper part of the motor. but im learning more everyday. I think it might be better for me to work my way up to that kind of power unless of course im just being a pansy. lol. I can handle an srt-8 just fine but i want more power than that. lol An yes i want it in a diplomat lol