Best? I dunno, I stuffed a 79 Newport front suspension under my 38, had to section the K member and centerlink to do it. Also setup the rear T bar mount up to accept A body length Tbars to widen, and cheapen, my Tbar selection. I know that someone made a kit to put a longitudinal Tbar suspension under early rods, forget who though. Only looks "good" under a fendered rod though.

An aftermarket suspension based, loosely, on the MII has most of the kinks worked out, can be made to look great on a fenderless rod and has tons of options, but using a stock MII as the basis of the swap will probably end up costing you more to replicate the aftermarket kits than it would to just buy the kit to begin with. That's probably what I'd do today, unless you want to put a last generation Panther (Ford full sized) suspension under it.