Engine died after 20 minutes

[chopper]

Just to weight in here on a previously mentioned item. IMHO, you should seriously consider adding a new oil cooler to that list of parts you ordered. I think I would listen very carefully to Mr Fixit and Ron61 on this; there's too many little nooks and crannies in the oil cooler which will trap and hold any debris for future release into your oil system at the most inappropriate time. I realize it's another couple of hundred bucks on top of an already unplanned expenditure, but I think I'd be a bit worried that some of the debris bypassed or passed through the paper filter element during the parts disintegration. A new cooler may not actually be necessary, but it's cheap insurance against future problems. FWIW, my $0.02 here. Hope it works out well, whatever your decision.