Back in the mid 70's southern Ron Chidgey took the Tiger Tail and shrunk it to make the Bobcat. Southern R/C had a kit which said on the box it would "Purr with a 29 or Prowl with a 40" with today's engines I would suspect that if it was built lightly that it would be a great 20-32 size plane. I have a kit downstairs and it does show retracts also but I think they would be a little tight fit as a trike. Jim Kirkland's Mustang X was a .46 size which might work well with the 32 size motors of today. Also had retracts. There was a Supra Fly 25 ARF at one time maybe late eighties or early nineties and I have a partially built Aurora 25 kit from MK from about the same time frame.

I spent alot of time working in at Samsung in Korea during the early nineties and at that time 10% nitro fuel was selling for around $40.00 per gallon at local hobby shops. I went to a local pattern contest in Chang Won and all the pilots flew 20-25 size machines. They said that the only guys that flew 60's or 120's were the masters going for the team trials. Had a real ball flying a borrowed "little Arrow" with OS 25 VFDF piped and it was FAST. Had better eyes then.

Hope this helps.

Peace

Mark O