Hi
I have a couple of two stroke 60's but have not put to much thought in that direction, how does it fly with the OS 61 FX on.

I have a
OS 61 SF
SC 61
Picco 60
Rossi 60 FISE (dont think there is too much place for the pipe though)
Webra 60 RE, think these would quite well with the air duct and a tuned pipe

Cheers
Squid