A body rears are hard to find an expensive when you do find one. B body rears will fit with the spring perches moved and wheels made with custom offset. I'm going to narrow a van 8 3/4 to the width I need for my duster and my wheel and tire combo. I plan on doing all the cutting and welding myself, we'll see how that works out. Any machine shop should be able to narrow a rear and then you can order custom axles from mancini racing. there is a great website called 'bigblockdart' with literaly thousands of pages of information on anything involving mopars from people who have actually done it. Let us know how it goes.