Chattering usually means a weak pressure plate.

So you looking at the whole thing.
resurface flywheel, Clutch disk and throw out bearing.

When I purchased my pickup it had the whole set with it.

I purchased a complete engine from a local speed shop and dropped it in and replaced everything.
So I don't know what is involved in doing an install.

Ralph..

Ralph

1991 Toyota 4x4 Standard Cab Pickup.
engnbldr cam and head.
Doug Thorley Headers
Home Made Cat Backs
30x9.5x15 BF Goodrich All-Terrain M/T KM2