original engine with 150k miles failed after hard run on backroad- cylinder 3 rod bearing and surrounding main bearings failed

Pulled a crank out of another motor had it cut and bearings sized. Had friend 1 with better experience plastigauge it. It all checked out. Put 7k miles on it and while driving to school doing 80mph in 5th gear and destroyed the #3exhaust cam journal and cam (it was BAD) as well as #2&3 rod bearings and surrounding main bearings.

Used my original crank and rods after a HIGHLY recommended machine shop cut the crank and sized the bearings. Had friend 2 check it. Got the green light to re-assemble.

7k miles later it started to knock faintly after a hard back road jaunt for about 4 miles. The oil light flickers @ idle but goes out with a little throttle. Drove it about 4 miles and the knock hasn't gotten louder (its REALLY faint) but its down a good bit of power especially abouve 4000rpm but pulls ok in 5th gear @ 3000rpm.

If your wondering why I was getting on it, I can not hear inside the car. Only with the hood propped and slightly revving it can it be heard. Its really faint.
New OEM Honda oil pump after the last motor went.