is the Tamiya Pershing recoil unit smaller then the Tam. KT recoil? If so is the a chance that someone could measure the length of the Pershing unit for me or let me know if dims. are posted somewhere?

The pershing/panther/pz IVis definitley smaller, use it on all my scratch builds with smaller turrets and fit them into the HL PZ III and Bulldog. Don't know the specs off hand and most of my tanks are in storage till summer, sorry.

Roughly 63mm x 50mm

The Perhsing recoil unit is identical to the Super Sherman recoil as well.

As well as the KV series...not sure about the PIV though

Thanks all. have to get one now. i have 4 recoil units and they are all the tiger/kt size.