Not saying I know much but I run 35s on my 350 with a +9 and 12 paddles and it seems to run real hard. I would say no smaller then 35s and no less the 10 paddles depending on setup. just my .02
Sounds like we should l have a decent group coming down for this also. How's the feed back from elsewhere, many people going to make it for this "test and tune"??