Cam bearings
To remove and install cam bearings in your motor, you will need a cam bearing installation/removal tool. The standard of the industry tool for this task is made by Lisle and can be used to install cam bearings in almost any conventional engine. The task isn't particularly hard, if you have this tool, which can be found on eBay and local trading posts. For example, here's an eBay link for a used Lisle cam bearing tool:
http://cgi.ebay.com/ebaymotors/Cam-...43998QQitemZ4625521243QQrdZ1QQsspagenameZWDVW