The "sold as is where is" just means if you buy it, you're buying it in the condition that it's in where it sits. It DOES NOT mean you can't have a mechanic look at it so you can determine if you want to buy it as is. The current owner could say no to the mechanic, but the as is where is doesn't mean that.
What is the "engine bar" that cracked?
I'd check to see if a new windshield is still available and the cost. The next biggest cost you (should) will have if tires and batteries, check how old they are. Other than having a mechanic look at the engine and transmission, you've got the experience to test everything else yourself.
Bill
