ok now--
Bolt pattern is 5 x 114.3 mm (4.5")
Centerbore is 56mm
Offset is 55mm

Now there are different opinions on using different offset settings.
SVX's are notorious for bearing problems--
--One train of thought is to only use stock offset since that is what the car was designed for
--Another train of thought is if you use a different offset the bearings would either not go bad or bad as quickly
--Another is that if the bearings going to go bad anyway use whatever offset out there that is on the wheels you like...
for my $.02 (two cents) I stuck with the stock rims just because I'm too cheap to go through the trouble...