I am wondering what the lift is in my stock 95 5.0 engine's cam shaft . I know that a b303 is 480", an e303 is 498", and a f303 512". I am also wondering which cam would be the best to go with, My goal is to hit somewhere around 250 to 275 rwhp with the explorer heads and intake combo or tmoss ported lower, would like to spend less than $1000.00. and can take my time doing it b/c I have an extra engine. any opinions are valued.