A tip for the Canadian guys - or the rest of you if you want to come north for a roadtrip. Princess Auto has some new 4.8's sitting around. There is one on display in the Panet Road store here in Winnipeg. The tag says about $2K but I have it on good authority that you can probably get one for about 1/2 of that. It appears to be a complete motor right down to the spark plugs.
You would need the rest of the stuff to make it work if you want to drop it into a 68 - like computer and harness etc.
