Another tool to buy! One of the perks of doing anything yourself. Looks like a dial bore gauge will join the collection. Having the gear carrier and crankshaft out of the car its time to replace the main and thrust bearings. This engine was a daily driver, mainly freeway with 120K miles. The previous owner drove semi aggressively in Houston traffic and was a stickler for oil changes with the Porsche dealer. As the pictures show, the mains were shot with the babbitt missing in some spots and the backer worn clean through to the steel on at least one edge. The crankshaft mains were not scored and actually looked great so they got a light polish. My takeaway from this is the recommended lube results in worn out main bearings at 120K for a car driven mainly in top gear. The rod bearings, though not as worn as the mains, were also replaced.
