need help with mod ideas!!!!!

[Chris4th]

i had a 05 f-250 with 127k miles it ran great and i loved everything about it. then i moved to CA and a month ago my baby was stolen. no i just bought a new to me 05 f-250 with a 6" lift 35" tires, bagged in the rear and a banks exhaust. the prier owner had done a few other things to it but the dealership removed it all. now im looking for info on what exactly i should put back into it ie(tunner, intake, gauges, egr...) im looking for the biggest bang for the buck.