The XTX, XTR and MT-03 engines will all work as donor for the Z.

The motor from this bike might be worth considering...

http://www.xt660.com/showthread.php?t=23202

Thanks for help guys. I will contact Yamaha and ask them if they could offer any help. I have seen this motor on Ebay but I was not sure if I can use it in Tenere. It seems that I can.

Hi Oldmanthatcansee,
Yes I'm interested. I'm now waiting for summary what components are damaged and needs to be replaced. When I got it I will contact you.

Thanks