When I first layed my eyes on it I thought - wouw such nice tires, I need to have this

The Novak gear is in good shape, but it´s funny how the owner spent a small fortune on novak gear, and then went with a 20 dollar receiver.
I´ve a couple of questions that I can´t seem to find the answers to:
1. What kind of steering is that alloy thing?
2. The wing wire mounts, what are they?
Would it be bad manners to mount 3 piece rear rims on it?
Any help appreciated.