[Jay_]

Hmm, okay yeah I suppose I can see your point about repeating data as it's less likely that a vehicle would have all 9 mod slots filled. However they wouldn't necessarily need to contain data or store the value of "0" if they where nullable columns.

The fact that it's only 9 rows containing very small amounts of data, personally I'd leave it in the one table. However you do make a good point and I can see why it's debatable.