How new of a car am I going to have to get to have air bags?
'90s or better, but don't take me to the bank on that.
I also found 3-point replacement seatbelts for $80 each.
That's not a bad deal - the price I cited was what I paid in replacing my 108's set with something that looked like it came with the car. This is going to be a recurring theme when you buy an older Mercedes - what parts are "acceptable" for repairs. There are those on this forum who would say that ONLY parts from the Mercedes Classic Center should be used. I enjoy sparring with them because I feel this is utter BS. If this is going to be a daily driver, YOUR daily driver, parts are parts are parts. If you plan a concourse restoration to get all 400 points for a client, then use the classic center and drive the thing less than 100 miles a year.
I did think of 1 other question....Is insurance just standard or is it some special insurance for classic cars? So I have to make a decision pretty quick....birthday is just a couple of weeks away.
State Farm, Geico, Farmers, etc etc etc will provide your daughter a policy, and that I WOULD take me to the bank on. There are insurance companies that specialize in classic cars, but there may be stipulations on how many miles can be put on the car, what it can be used for and the coverage type.
Go to the Online Resources portion of the forum, and look for info on your car - tons of stuff there. I've got a repair manual that I can send you as well (PM me and provide your address).
My advice - buy the car, upgrade/replace as you wish, keep old parts if you worry about originality, and drive the thing's wheels off. Take a ton of pics, and be proud that she drives something you researched the hell out of and made a good decision on. When it breaks or wears out, come back to us and we can forward you to vendors we have used/trust, or provide knowledge on how to fix the thing yourself.
Good luck, keep us posted on your final decision