First of all, what do you have in mind for top end? I assume you are at approx. 44-45 mph.
Have a conversation with Eric at OJ. He will give you all the prop info you need.
As far as engine goes, there is a limit somewhere........but you will want to have a plan so you can match engine performance with prop.
Two 14" 5 lug S5 wheels with ST205/75R14 Kenda Loadstar radials $349
Two 14" 5 lug S5 wheels with ST215/75R14 Kenda Loadstar radials $389
Two 15" 5 lug S5 wheels with ST205/75R15 Kenda Loadstar radials $409
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