With a '90 model do not forget that it is 18 yrs old; therefore, a lot of basic maintenance items are going to need to be taken care of. Coolant hoses, fuel lines, rubber brake lines, vacuum lines, and such tend to like to dry rot by this time and need replacing. Not very expensive, but annoying when you have to keep finding the leaking line. On the positive side of things, the M20 is a simple motor to work on. It has no frills or thrills, making all maintenance procedures straight forward. (much like a non vtec sohc D16) Parts can be found cheap and there are plenty of knowledgeable locals that are willing to give advise on almost any question that you come up with.