White Wolf is correct on all points.

The Porsche turret hull riser ring makes the concept of turret swaps a bit dicey for a runner and expensive. You need things solidly built for a runner, like glued in place.

The static kit and the 1st generation, old, not full option, DMD RC kit hull does not have the inside mount points included for the later DMD turret rotation unit as found in the current Production Turret King Tiger Full Option kit, though many people have adapted the full option production turret rotation unit and ring gear assembly to the old Porsche turret.

The spacer ring is the basic exterior hull difference, plus the static kit does not include the hull rollers for the Porsche turret to ride on, as they are only included in the rc equipped kit, though hull indent voids are molded in proper positions for the "not included kit roller parts" to drop into.

Lastly, besides the stated differences between the kit hulls, the left and right engine vent screen assemblies that are unique to the Porsche Turret KT that would ride to high if glued in place to allow for easy turret swaps with a KT Production turret, so they would need to be deleted.

Even if you designed a removable PKT turret ring, aligning a turret rotation system to work for two different sized and shaped turrets seems a bit much, though not impossible.