Well. of course because the deck is approx an inch taller, that makes it wider cuz its a V-type engine. I know others have said an RB stroker is super sweet and I cant argue with them, but you must know you can do more than most folks can or want to handle with a stroked 400 right?? A 400 is a direct bolt in, since B engines were offered at the factory. Trust me, its a good bit less hassle and weight on the nose. One of the big issues you'll find on an RB swap is the proximity of the exhaust ports to the inner fenders. The steering box issue is the same for either motor. HTH, Lefty71
