s10 backspace?...Any one have some wheels?

Whats the best offset and width for an 02 S10. 18s or 20s. Right now I will be doing a static drop, but soon be bagging it. And does any one have some wheels for sale. If you have pics you can email it to illcrazyconceptz@hotmail.com. Sorry if this is a common post, but i couldn't find it no where and I'm new to S10s