I chose a YS63S for mine over the Saito 82, which might have been just as good. Price wise they were the same with the addition of a Perry pump on the Saito.

I set the engine at approximately the 8 o'clock position so the stock muffler aligned with the tunnel. That was a good choice, the glow plug is accessible, the exhaust exits downward and not on the plane making cleanup easy. and I think it looks good.

I have more power than I need, will roll vertically indefinitely.

AW