I purchased a INS box for my RB R3 engine. The reason is track is dirty when testing and its in the rules as 2009 all .engines must run a INS box.
The INS box I purchased is a nova rossi. There is no way it will fit on the engine.
Has any body else had the same problem. A mate has a Nova Rossi 12-3sct and he says it fits his no problem.
Maybe have to change engines to a Nova