i'm looking at a friend's 1991 legacy wagom w/ 170000 miles. it's pretty clean, w/ afew body dings, but overall ok. maintenance records indicate ok schedule. they have had it for 7-8 years w/ no problems. they want $1800. i am new to subarus, having been a bmw guy for several years. my questions are pretty vague, but mostly just "what am i getting into, and what problems swhould i expect?" a friend tells me that the cylinders are prone to failure at high miles. any help appreciated. bruce