You can get the crank kit off ebay with the bearings and gasket kit for around $137 to your door.
http://motors.shop.ebay.com/i.html?_...&_sop=15&_sc=1
Seriously, if you have not bought any parts yet, this is the way to go. By the time you buy bearing, seals and gasket kit you are going to be half the cost of this kit, why not take care of the crank now and do it right.
It's what i did and will do on the CR80 and CR85 when they are ready to be refreashed. Even if you don't do the Eric Gorr 101 route, you should still replace the bottom end. seperating the cases is the hardest part. The bearing can be tricky to get our of the cases, use heat and freeze the bearing to put them back in.