456 6 speed daily driver

Hi all I am a CT enthusiast who has always daily driven cars most people would not including a 911 3.2, BMW E30 and now 964 C4. I've worked on all of them - pulled each of their motors - and done just fine when selling them although that's not the point, the adventure and enjoyment is. Before internal combustion is over and done with I'd like to own a V12 and a Ferrari and have often admired the 456. If anyone of you are like me and use cars like this on a daily or near daily basis, please PM me to discuss. I do not commute to work by car daily but I do put a bunch of miles down, year round.

 

What would be incredibly helpful is to hear from an owner who self-maintains all of their vehicles to hear a comparison. Extra credit if that person has worked on an aircooled 911. I do just about everything myself including engine work, electrical, exhaust, suspension/brakes, air conditioning. Things I don't do are mounting tires, balancing prop shafts, and if specialized computer equipment is needed - but on the 911 that is all available via laptop or the massive community. I am on the shoreline of CT and there are scores of 964 owners around with every factory tool/computer I need.
Another thing I can't repair myself on the Porsche is the HVAC head unit and its servos. Those are crucial to daily-ablity and specialists work on these parts for what I consider fair sums - I can probably have the majority of the troublesome components rebuilt for $1k all in.

So I'd like to hear about procedures or problem areas that really try the home-mechanic. Things I've read about are window alignment - I have have done body work but its painful and I really only do it on my long term resto projects not my daily driver. What are other "gotchas" where you can't sweat equity your way out of a big bill or lots of down time? I recall cracking exhaust manifolds on F355s. If something like valve guides were weak I would presume a mind boggling bill to replace all of them - where as all 6 heads on the 964 can be reconditioned by scores of shops for not much more than a grand. I've done internal transmission work on my Alfa but highly doubt I'd do it on a daily driver Ferrari.

Thanks for opinions and experience from self maintaining owners.