my R12S stands without peer, except for what's going on over the pond. I will be very interested to compare the power characteristics of the 2 engines, my expectation is that they will be very similar, with the HP2S maybe a bit buzzier due to the missing counterbalancer, and the R12S perhaps quicker revving due to the Wossners. I am sure once I get done tweaking the HP2S, it will exceed what I have accomplished with the R12S
