Ok I just got mine finished. I didnt take any pics though cause, well it was cold and I didnt mess around...lol I pushed the top bushing out and got a bronze one at ace hardware. I had to drill out the center with a 9/16 drill bit and shave down the outside of it just a tad to get a good fit. For the spacers I used a plastic bushing that I also purchased at ace hardware and drilled it out the same. I did have to grind the little lip off the front of the airbox but thats all I touched on the airbox, I'm not running a lid so no mod there. My boot going to the carb is already modified to fit my 34mm carb so again no mod there either.
For the bottom I drilled it out as well but I forgot the bit size. So all in all I'm happy.
I rode it around for a few minutes and could tell right away with the banshee front shocks and the 400ex rear that it was ALOT smoother just going over bumps. Didnt fell as "rattly" or jerky ...haha The rear feels alot like the yfz450 obviously not as much travel but similar in compression and stuff.
bronze bushing was 4.69
plastic bushing was .79
drill bit was 16.99
Not bad.
Cant wait to take it out on a decent ride.