I am pretty sure my tranny mount on the 2000 XJ Sport is beat.

I don't want to spend a lot of money on a replacement, so I've looked around and seen a few different brands, Anyone have a recommendation on an inexpensive replacement? I'm getting the under-vehicle knock when I first start it up and then if i turn a corner at speed i feel it all clunking around under my feet.

I also have a problem with the 4x4 lever knocking... I heard that has to do with some bushings or something?

Napa or mopar mount. Don't cheap out on the transmission mount.
The anchor brand mount is to short and causes the exhaust to hit the crossmember.

what Monaca said. The Anchor mount is a joke.

I also agree with MY. Don't cheap out on that part. Many of the cheap brands are of inferior quality and have well-documented issues. I personally chose Mopar but the NAPA has a good rep also. Eat Ramen or PB&J for a week if you have to.

Understood. As far as the transfer case linkage goes, yes, the nylon bushings do wear out, allowing the linkage to vibrate (amongst other things). Some people replace the entire linkage with these:

http://www.boostwerksengineering.com...-V20_p_25.html

http://www.azzysdesignworks.com/stor...se-linkage-kit

https://www.novak-adapt.com/catalog/shifters/sk2x/sk2xc

Or, make one similar themselves.

I switched to the Azzy’s linkage. OEM is a POS, you’ll see the difference when you look at them side by side. Works great. Solid. Make sure both sides are even. Watching the video is recommended.