So you can tune a box, what about tuning your entire trunk? anyone ever seen it done, or contemplated the thought?

 

is your trunk airtight?

 

I've seen pictures of a couple setups in which the guys fibreglassed the entire trunk to maximize airspace - a red mustang from the states comes to mind. If you stick a port in the trunk I guess you could call it "Tuning your trunk", although you could pretty well tune anything with a port in it.