I have seen some guys using the 2050 in truck and the 2060 in buggy with the new OD SS 21 motor. From what I have seen it looks like a very capable mill seems to get good runtime, easy to tune and good broad powerband. I myself am also in the same boat I have the 2 OS pipes and would like to get a new engine but don't want to buy new pipes, although Mark at Powerhouse and a few others are trying to talk me into putting a P5 in my truck
Hope this helps
Frank which nova did you get and is it going in your truck or buggy_keep us updated