For a standard installation you will need the following:
Open the gearbox.
Remove the gears, cylinder set, spring, spring guide, antireversal latch, tapet plate, air nozzle, and trigger switch. On a version 2 gearbox also remove the cutoff lever. Bushings/bearings may be removed as well if desired. Wipe up excess grease.
Place SMP Cylinder in place of the cylinder set. Install trigger board in place of trigger electronics.
Reassemble gearbox with wires routed to front or rear as desired. Assemble back into gun body normally, with airline passing through the grip.
If you would like to rout the air line to the rear, it is necessary to drill or cut a hole in the rear of the gearbox to accommodate it.
Video Installation Guides: