These 140s were officially rated to 75hp, but I bought a new one back in '91, which was (probably mistakenly) stamped on the plate as 85hp max, so I fitted a DT85 Soozook to it.
It ran fine
Prior to this, I had an '82 version, similar to the one in the pic and this went ok with a Soozook DT50, but even better when I replaced the 50 with a DT65.
JK: Can we have a Fletcher section?