Hi just even more problems now.
my KR wont even shift into gears now.
when it does shift into gear while driving it jumps out like it goes into neutral and can jump back in
is it the transmission or what?

If it is going to cost too much, Might have to get a new car sooner than i thought

this might sound stupid but have you checked your trannie fluid lately? i had the same problem with mine

Yea checked yesterday and it smelt like a slightly burnt and appeared to have plenty of fluid

serviced mine and its still playing up. Jumps in and out of gears when ever if feels like it.

In my TR, it won't go into 4th, I suspect that the Torque converter isn't locking in anymore as it jumps out and back to neutral as soon as it slips into 4th. Plenty of fluid and relatively new.
I have resorted to keeping the overdrive off and have a 3 speed for now. Plan is to get a recon box ASAP.