i am seriously considering buying a 70s or an 80s 911. i have found various cars in magazines and on the web that appear to fit my needs, almost all of them built between 1974 and 1985. (living in europe there are tons of old school porsche 911s around.) so here is my question: what do you guys know about reliability of these model years? i know 911s have pretty amazing reliability in general, but would a 20 to 30 year old 911 be suitable as a daily driver? any known issues i should watch out for? it is going to be my first "classic" car, so any input would be very much apprechiated. thx in advance.