Don't forget to factor in the weight difference when doing comparison....also reliability, cost.
yes radials look and sound great, but MY personal experience tells me unless you have veryDeep pockets and lots of patience beware, messing around with radials caused me grief.
evolution 7-77 glow radial and moki 5 cyl 180 gas radial.
bottom cylinders get fouled up and fuel distribution to each cylinder also common issue.
setting valves also complicated.
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Don't get me wrong, if I ever hit the lottery I would get another Moki but