All the accessory parts, mounts etc. need to be for a 6.3ltr/383ci-6.6ltr/400ci Low deck B-Engine series, the heads, oil pan, oil pump, timing cover, are all the same bolt patterns on the 361-383-400-413-426-440, the intakes & distributors are different on a 413-426-440 RB Wedge than the 361-383-400 B Wedge {low deck}, some aftermarket stroker crank shafts will have an 8 bolt flywheel bolt pattern instead of a 6 bolt pattern that is stock on the majority of the B & RB blocks, except the 426ci Hemi's, you can use an oil pan from a Hemi or a 440 on a 383/400 B-Engine, just need to make sure it's for the correct body style A-B-C or E, harmonic dampers/balancers can be varied in diameter & thickness also, the crankshaft needs to be ordered for a B-Engine & the main bearings need to B turned down to the B-Engine spec, the counterweights need to be reduced to 7.25" max outside diameter, I usually have them turned to 7.125" max O/S Diameter, it's an easier balance job, more clearances & lighter weight to boot... Good luck & "I would highly suggest you buy a book" on "How To Build A Big Block Big Inch/Stroker Mopar Wedge" from someone like Mancini Racing, they will also have most all the parts & technical advice, you will ever need for most any Mopar Build also................ educate yourself first before you start buying any parts & especially expensive stroker parts....
