Thanks . I've been looking at that and it looks like the fastest resolution. I'm in Ontario, Canada (near the NY State Border) so I have to deal with all cross-border hassle but it can still be done. Just noticed you're in a 'border town' too.
I'm going to do a quick check with the local AERA machine shops to see if any of them have any experience with rebuilding the head with the proper valve seats. If I can find one, it might turn out to be faster and slightly less hassle. If they don't seem to know what I'm talking about I'll proceed with the US reman head.