[Forza]

I'm looking at a 1977 911S that had its engine rebuilt 18,000 miles ago. The original engine before the rebuild lasted about 118,000. During the rebuild, headstuds were either helicoiled or timeserted (can't remember which, but will confirm soon) with Dilivar studs. The engine has the Carrera tensioner upgrade and an 11-blade fan. Don't know about an additional oil cooler yet. The car overall is in very nice condition and has been maintained by a genuine Porsche aficianado, but I would appreciate some feedback on how reliable the 2.7 engines are after rebuild, timeserting, etc. I still need to confirm all the specific upgrades during the PPI, if course. If everything checks out, how does an upgraded, rebuilt 2.7 compare in terms of reliability to, say, a 3.0L from the SC?