Now that’s a blast from the past! I was racing pavement late models when the ASA went to that engine in 2000. My shock guy, who is Chase Elliott’s crew chief for his late models today (we are all friends/neighbors) went over to ASA to run these cars. What I was told in those days was Lingenfelter changed the cam, springs, rod bolts, and some other stuff, but I don’t think they changed the oil pump? Maybe someone else knows that engine more than me, and will chime in.