I have the B4 body too. And like tamiyadriver said.. it very much resembles a Strat 2.0. I didn't open mine yet, but are you saying it has NO window masks???!!!! WTF!! hahaha Damn..... I was all siked up that it was marked for my 415 and Evo IV. But no masks... haha... I guess ya can't have it all.
JR, the 415 is a very nice car. It's very easy to tune. And changes/tuning made are very noticable (to me) on a smooth track with decent traction. The car is very durable and hardly needs any hopup parts. Only thing about the car is doin maintenance on it. It's time consuming accessing the diffs as well as adjusting belt tension. Batteries need to be taped in. And electronics space is somewhat limited if you have older larger electronics.