Just had a look at an '89 model GSX750F which seemed to be in extremely good condition for it's age. Noticed it was fitted with a 4 into 1 exhaust which I don't think was standard (but was old and rusted) and a stainless muffler which is definately aftermarket (and looks fairly new) - also been fitted recently with braided brake lines. Bikes got about 65,000kms on it which I'd say is accurate - although the current owner hasn't had it long and didn't know if the cam chain tensioner had been done or not. Only faults I could pick was that the tyres looked like they might need replacing soon (chain is new though) and that the rego expires in just a few weeks (so going to be a few hundred extra there). Didn't take it for a test ride but did have a play with the engine and noticed that when cold if you gave it a quick rev then closed the throttle the revs would drop real low - this seem normal? (owner seemed to think that it was). The guy's asking 4 grand firm, just wondering if people reckon this is a good deal or should I just keep looking.