Need a 4x4 truck frame!!!

I have a Trans Am body I would like to put on a chevy or ford truck 4x4 frame to use in the mud. The wheel base of the T/A is 108". Im wondering which fullsize chevy truck frames will fit this wheel base. Im assuming the short box chevys and blazers will fit but would like some corroboration of this. Could use a ford frame as well if any of those are closer in measurement. Would actually prefer a ford frame as I have a spare 302 to put in it. Any help here would be greatly appreciated. Thanks. Steve