Most aftermarket wheels have tapered lug holes which match the tapered ends of aftermarket lugs. The stock wheels have flat lug holes to match the flat stock lugs. So, no I would not recommend using the stock lugs with aftermarket wheels.
yeah more than likly you will need a set of 'tuner' lugs....you can buy 'em and just about any auto store....usually if you buy you wheels somewhere they see them too