Delaminated chassis, bent hingepins, busted spool...just about everything but the rear suspension broke or bent last week. Mary Lou? I didn't know you had a thing for petite gymnasts that look like 14 year old boys...oh wait that's someone else (you know who)
Also, up until last week I have been running mine on a 3mm chassis and it works fine. It may work better when traction is uber high.
Will they fit foams? I don't know.
In regards to spare parts. The arms and hubs are reversible, meaning that they can be used as either a left or right.
As for the ss pins for the Evo, I'm not sure as I don't have a set but the outter hinge pins do use the screw type pin.