I think it would be a great conversion as long as its not to heavy.I have a converted 28cc stihl and its pushing a 17x8APC at 7400.That thing should swing a 20x10-22x8APC no problem.Youd have to talk to scott at, brillelli engines as he does engine conversions with rubber mounts,ect.
Also get in touch with Ralph at RCIGNS.com(hope thats right).
Try Ken at Lambertsrc.com also.I know how you could do it but you kinda implied you dont have many tools.There are some threads on here about the boot problem,put in rubber boot in the search bar for this forum at bottom of page.Theres quite afew pics of mods.
Actually,in the gas/glow thread the best formula and what the best operation is with this setup i believe is in the first 20 pages or less even.1/3- 10% oil glow fuel and 2/3 reg.gas,4-stoke plug.All the rest is optional hubs,mounts ect...Look at av8tors posts,i think most of his fleet is gas/glow by now.