I have a subwoofer speaker in a under dash enclosure for a 451. Smartmadness has these for $290.00. smart car Speaker Enclosure with Subwoofer Set (underdash) Online Store - smart car Parts and Accessories I'll let this go for $100.00 plus shipping. I did check with UPS and here are some prices for shipping. I and the speaker are in Ohio. To CA, $81.52. To FL, $46.12. To NY, $30.00. All these are plus packing, additional $19.68.