M South,
I have built one myself and I will try and get pictures this weekend.
Keep searching, there is info out there. Look beyond RC Universe.

Something I found after I built mine is a universal engine mount by Magnum that has a slot in it.
Looks like a good idea unless the slot is to far back for some of the smaller engines.

I don't recommend the VMar. If you do a search on them here it seems there stuff is pretty junkie.
I didn't like the looks of their machine - looked kind of flimsy to me. Someone reported here that it was.

Keep up the hunt, they a blast to use. Makes life real easy.

KW_Counter