getting a 240sx soon

the next car im getting is a 240sx fastback from either 89-93
i already read the faq and it answered most of my questions but i still got a few more
i heard the 92 and up is different in some way??
whats the lug pattern?
is there a website where i can buy good bolt ons for a good price??
what are some things i should look for when im buying one?
any other information is helpful

look for:

no leaks
clean engine compartment
not bald tires
clean underbody... no scratches or dents underneath car
lower mileage
body damage
shitty paint jobs