Anyone know where to get Blazer/Jimmy roll bars? I'd like something that fits as close to the roof as possible, but doesn't look wimpy with the top off. Would like some peace of mind when my munchkins are in the back seat...I know that, supposedly, there is an integral roll bar in the cab roof of the 76 (?) and newer trucks- anyone ever seen a cage for the rear portion of the truck? Be kind of neat way to attach a canvas top (like a boat bimini top) for the backseaters while still having the "topless" feel.... GUZZLES GAS BUT IT'S FREE AND CLEAR!!!