Hi John,
The screen is same in MK and MJ, and can see no reason why it should not be different to the TK. Try these people, www.avi-ltd.co.uk/index.html
Regarding Winch, I assume you want everything, so you can convert a MJ to winch. Well, there was never a kit, so only chance is to find a MJ c/w winch that is being scrapped, and stripping it. There is a lot of parts needed, from front, PTO lever in cab, plus linkage to transfer box, air brake control in cab, PTO output on transfer box, Winch and mountings, propshaft, laying-on cradle and brackets, fairlead and roller assy on rear, plus pulleys on side and front fairlead.
regards, Richard