I was thinking of installing a new unit with an MP3 input - does the factory SR5 radio have any aux jacks in the back?

For $75 or so I would go rather just go ahead and yank the stock unit.

Jeff
96 T100 SR5 4WD Ext Cab, Warn Hubs, HD torsion bars, Bilsteins, Camper Shell, TJM bar, factory 31 x 10.5's, Powertrax No-slip rear, Recaro driver's bucket