256/277 def beats the nuts off my 93oct numbers !! But I always gave up and switched to eth blends, lol.
I'd say I'm the oldest cyborg user, other than Rick's/raamaudio turbo that was the very first one ( that is still in service btw ).
Joszer is running one at Laguna Seca pretty regular with no issues as well.
We have had two issues so far. #1 was with Issacc/Hijinx turbo where a local oil change place over filled his oil and it backed the turbo up with oil.
The 2nd issue was what looks to be a leaky oil ring, but we have not gotten it back yet, I sent the customer a super clean core last Monday to swap on while we take a look at it. It was still running strong, just had a little smoke. But besides that, every turbo I've done has been extremely reliable.
Mine has been punished likely more than anyones and it was still kicking before the cylinder head failure.
In case anyone is wondering... You have to buy over $200 in ford special tools to correctly remove and install a cylinder head, and that's before the head bolts and gaskets etc