Norman,

The steps are the similar to a gas conversion, except much simpler. Basically, you just strip the Ryobi down to bare engine block, put the glow adapter, prop hub, and new carb on it - that's it. I did retap the drive shaft tip internal thread from 8-32 to 10-32 so I can put a 3" GP spinner on it.

There are many websites detailing the exact steps, so I won't repeat them. Here is a good one:

http://www.geocities.com/CapeCanaveral/Lab/6216/

The glow plug adapter came from my G23 glow. I'm also getting another one from CH Ignitions. OR, you can make your own. For the initial bench run, I just use the cheap old Tower economy plug w/ idle bar. Once the engine is broken in good, I then experiment with other plugs. As is typical, the Tower plug runs great as is.

I guess you can try the Ryobi stock carb. It has a very restrictive venturi though, so even if the needles can be opend up enough to meter glow fuel, it might not flow enough air to make good power. I have a bunch of these small venturi carbs from all the weedie conversions I've done, some of which are fixed jet and therefore useless for RC application. Instead of trying to modify them, I just strip out the diaphram pump section and use it like a Cline pump/regulator. Replacement big bore carbs cost around $35 for these weedies.