The clutch tool can be made out of a piece of pvc pipe end cap. Just figure the size, 3-4" and the appropriate bolt/nuts. The idler puller would be hard to make, but I'm sure there will be people here on the forum that will loan it out, I would for a deposit. The drive sprocket puller can easily be made or a general puller may work, I think people have used the holes in the peg supports or was that for the rocker spindles? The rocker spindles can be pulled with an old con rod bolt, if you don't have that, you'll have to find a 5/16 WW and a few washers, I think that's the right size. Most everything else can be sourced from a stocked workshop. Of course the 3/8 drive 1/4WW socket and a few WW spanners, then the standard metric sockets and american standard sockets and spanners.
The only bears I remember were the gearbox nuts that needed a thin 1/4ww and the nuts under the head that are impossible to reach with anything standard.
There have been a few threads on needed tools. You need to find the right words.
Try these to start
engine-rebuild-diy-tools-t6567.html
post91296.html
Dave
69S