Swapping a 360 from A-Body/auto into a '78 Dodge Van with factory 318/4 speed - Advice?

No way I would want to ditch the factory 4 speed, that's what makes the van so much fun to drive, and rare too!
Well with the 360 in there, it will about double your low-speed torque, So get ready to shift! And shift, and shift, and shift.........lol