You can find the 510s on Tower's or Robart's web site. The mounting holes are only 1 3/8" apart so based on my measurement of the Comet gear mounts they will have to be modified. The retracts are rated from 8-12 pounds and should do the trick.

I haven't ordered these yet but should be doing that tomorrow.

I didn't see a finished weight for this plane on the web site but but would expect it to fall into the 12 pound range. I feel the thin tappered wing will let those 52s haul this plane around quite well, not as fast as my Duellist, but fast enough for this scale.

The mounting holes on the 52s are 44mm compared to 50mm on the 70.

That's all from me at 4am!

Can't wait to get started on this plane!