Thanks Beachboy. Progress on this upgrade has been slow. But thanks to some help from members of this forum I am hoping to have it completed in two weeks, when I will post a complete run through of the upgrade with pics.

The list of completed mods is as follows:-

All none-slip panels on upper hull and turret roof detailed
All moulded on grab handles removed and replaced with metal
Solid plastic turret stowage baskets replaced with scratch built items
Drivers hatch opened up for charging jack
HL S&S main board and receiver boards fitted in turret
Battery box removed to accomodate twin 7.2v batteries

List of mods awaiting completion:-

Fit HL gearboxes, Pershing drive sprockets and tracks
Fit airsoft unit
Fit laser diode for target designator
Modify commanders main sight to work as three way power/charge switch
Tidy up and secure all wiring

I used a S&S bord as I wanted proportional control, I'm not going to bother with the smoke unit.

Thanks for the encouraging remarks
John