Not sure on windage tray or scraper at the moment. Still looking into it. Some of the racers over here taht ive spoken to are not that keen on windage and prefer the scraper system.
As long as you have something to keep the oil under control in the pan at rev's... think you'd be fine either way.
FYI. Mancini sells a nice set of rockers made and guaranteed by Harland Sharp at a substantial discount over what it looks you will pay for the Hughes rockers. I just installed a set. I had to touch mine up a bit as they were tight on the shaft.. but well worth the investment IMHO.
