Don't worry about the music comin out of his speaker worry about the sad arse engine that sucker is running.
If I were you id run out there and give him the low down on how to strap a bug mutha RB26DETT to that sucker, chuck on some nitto 555r's and rock that baby down the motorplex!!!!!!!!
Ohh yeah grab one of those sundae thingo's in the cup he sells, they taste mad!!!