I loved my Spacewalker 2 ( unfortunately past tense ).

The engine mount is a little small, yet the cowl has no problems with different engines sizes.

My Spacewalker always had a bad left yaw at runup even in spite of the right thrust built in, and adding toe in, etc.

Once it was in the air, it was a great flying plane. At landing there was a small tendancy to ground loop, but it tended to track straight on landings.

I flew mine with an OS .46 AX.

The plane flew fine, with more than scale like power, but it did not have unlimited verticals. For that I would have needed a bigger engine.