45-50k on a boosted forged engine, Im not surprised its gone tbh thats a good innings.
Triple plate clutch will have been putting more strain on the thrust bearing for starters, and only running a unichip piggybavk on a build like that?
In my opinion Id have the block ripped apart and get new bearings, and any necessary machine work, bores rehoned and a new set of rings whilst youre in there.
Then get new management asap, link plug and play ecu is only £1100 now.....