Those are some low hp/tq numbers, even for a mustang dyno! I know a guy with the same LT1 cam/heads as me, but he has auto and he put down 340rwhp on a Mustang dyno and I put down 383rwhp on a dynojet. I figure 20rwhp more for me due to having an M6, and then that would leave 20rwhp or so difference in dynos Strange.