General V8 and EL GT questions

ok fella's,
My little brother is looking at buyin a ef series 1 5ltr fairmont, it has 198XXXkms
The following items have been replaced:
Air conditioning condeniser, alternator, fuel pump, radiator and hoses.
it has also been serviced every 10XXXkms
Is it standard for fairmonts to have an LSD ??
What much can go wrong with these motors?
It also has what looks like EL GT rims, how do we tell the difference between originals and copies??
also how much is an original EL GT grill worth these days??
Any help would be appreciated.
My little brother is looking at buyin a ef series 1 5ltr fairmont, it has 198XXXkms
The following items have been replaced:
Air conditioning condeniser, alternator, fuel pump, radiator and hoses.
it has also been serviced every 10XXXkms
Is it standard for fairmonts to have an LSD ??
What much can go wrong with these motors?
It also has what looks like EL GT rims, how do we tell the difference between originals and copies??
also how much is an original EL GT grill worth these days??
Any help would be appreciated.