82 wheel offset & misc autox help

["Brian Terry" <bet@justlaw.com>]

Does anyone out there know what the offset is for the factory wheels on an
'82 GT?  Was there more than one wheel available?  I would like to know if my
GT can still run in Stock (DS or ES?).  Except for the aftermarket wheels,
the car is stock, and I would hate to have to run in SP.  



BTW, this is my first time autocrossing in a fwd car, (13 yrs off/on autox
and road racing with RX7) ,  what are good tire pressures to use for this car? 
This is my station car, and has serious W&W (wife & wallet) restrictions on
available funds.  Any other good (read, cheap and effective) setup tips?  



TIA,

Brian