Superior Regrinds, and Tom the owner did a no-holds-barred job of getting me mobile again, in a very short space of time.
I dropped in mid-morning on the Monday and they told me the head was most likely cracked, as thats what 3.1 TD Isuzus do... after a $2-$2.5k estimate, and no other easy option I gave them the go-ahead about lunchtime Monday.
They removed the head, crack tested it and found nothing wrong, so it turned out it was a (very rare) head gasket failure... how many companies would have just done the head anyway?... They took the time to fully diagnose the head and check it - then skimmed it and re-fitted it.
Along the way they suggested I do the EGR valves, which is a small job thats been on my list for a while now - so I got them to do it "if they had time"... well, there were 4 or 5 of them working on the truck through till late Tuesday evening to get it running again for me (they were all standing on pallets on forklifts to reach the engine bay

Anyway, long and short, the bill was around $1500 all up, very very pleased with the service, and the timeframe for delivery. If you have any engine work needing to be done, I can't recommend these guys highly enough - and if you mention my name (well, my truck) you might just get the job done more quickly

Steve