The budget way to do this job is as follows:
1. Hacksaw off about an inch of the end of each bar right thru the plug. Just keep sawing away...its good exercise against arm pump.Clean up the ends with a metal file. That gives you about 29" bar tip to bar tip, a decent enough woods setup.
2. When you realise the bar end plugs are stuck, due to gunk getting in there or rust or whatever, take a drill to the clutch side and bore a hole thru the thing. Take a screw of roughly the same size as the hole and turn it in as tight as you can get it. Use vise grips on the screw and hit the v-grips with a hammer. The throttle side has a nice hole in the middle of the plug for some reason, so you don't have to drill it, if you can find a screw that'll fit.
3. Put a big dollup of grease on the throttle side bar before you remount the throttle assembly. You do need to wack the end off the throttle assembly.
4. Superglue works pretty good for holding the grips on. The grip will fail before the glue will, generally. You can safety wire on top of that on the throttle side if it floats your boat.
5. You may have to knock a 1/8 - 1/4 inch or so off your levers to get everything to fit. Removing the safety ball on the end usually does the trick...make sure you file those ends as blunt as possible to avoid possible impalement in a crash. Making the bar ends blunt might also help if you knock off the buster at some point.
6. The nice thing about the stock bar is...it bends back.