Need some input. Buying first 4.6

i went and looked at a 4.6 that i wasnt necessarly too interested in. the pics it looked chipped around the fenders, paint swirls, ect. i looked at it, drove it, ect yesterday. however they wouldnt take my offer for it. im going to try meeting them midway on the price.

that would be 9500 out the door, 2000 gt, black/black leather int, mach 460, manual, 82k miles.

i took my cousin with me who is familiar with mustangs and he went and looked over everything i couldnt with the salesman on me. what all should i check specifically? if they accept my offer, and my car sells im going to go buy this car, so i want to see if there is anything i missed.

runs good, strong oil pressure, no smoking, shifts good, no weird engine noise, smooth power, no hesistation or anything. looked under the car, no leaks, stock besides a k&n. the hood latch isint catching the hood right, so they had to take it down and spray it with wd40 or some type of lubricant for it to catch and hold the hood shut other then that, it doesnt have anything that needs fixed.

opinions? any input? i want to make sure i go through this car thoroughly since its all my money and im selling my baby to get it. thanks

i may try that or a carfax. they had the thing where it said get a free carfax on their listing for it. then i looked and it said, found 17 files or something, and i had to pay to view from there.

not familiar with carfax. is 17 files average or could it go either way?