many will say swap 4.0 clutch. would be good but i dont see a point if not offroading or bigger tires. You will find everyone says go for m5od. but fm146 will work as well.
Heres my list of stuff i bought and prices. All bought through advance.
-m5od manual trans ($80 off craigslist)
-88 clutch/brake pedal assembly (paid $22 at junkyard)
-89 slave($65.99), clutch lines(54.99), master cylinder(55.99)
-fluid reservoir($5 at junkyard)
-manual flywheel ($59.99)
-Optional new shifter bushings ($26.50 shipped[allstategear.com])
-optional but recommended rear main seal ($13.59)
-clutch kit ($99.99)
- manual trans computer ($8 at junkyard)
-5 quarts ATF- royal purple ($65 but got half off with coupon)
- orange high temp silicone ($5.99)
Probably forgettting some things
Im almost done finsihing my a4ld to m5od. just have to install rear shaft at axle end. Just make sure you have time and a place to do it.