I had a 440/499 with a solid roller 248/254 @ 50 at .614 / .620 gross lift with 1.6 rockers at the time. this was with ported iron heads 906s with 2.14/1.81 valves. car ran GREAT on pump gas and out on the street and was heavier than your car by a couple hundred... had a coan 3000 stall in it! at least with that solid roller and your ET goal your covered there I read posts on here all the time about people wanting to change from a solid cam to a roller cam!