- A full service shop offering ATI Prochargers, nitrous oxide systems, stroker kits, heads, intakes and everything else for 5.0 and Modular Mustangs! On site engine dyno, chassis dyno, flow bench and crankshaft balancing equipment. Panhandle Performance of Panama City, Florida is THE source for your hard core racing needs. Be sure to visit our used parts specials!www.panhandleperformance.com