I have a 2.6 5 speed SWB 1985 and thought it would be good to get the tranny rebuilt after 300,000 miles of use. It is starting to make a loud whining/grinding noise when accelerating except in 4th gear.

Also, when I drop the clutch in neutral it makes a whining, grinding noise.

What should I expect to pay? Is there any advice on directions/ parts to point out too the transmission shop that I decide to go with?

Thank you
I live in Long Beach CA.

1985 montero 2.6 bigger tires and stuff. im never gonna sell this thing. My buddies joke and call it the crockyyyy car.