Wow 11 years and only replaced once. I usually do mine about every 2-3 years and that is stretching it. I've only had good luck with the Ford Motorcraft brand GPR.
1996 F250 4x4 ext. cab, long bed 5 spd. 3.55ls, Tymar Intake, Tymar 4" downpipe and 4" exhaust. AIC, B&W turnoverball, EBPV brake, tranny temp gauge, boost gauge, and egt gauge. 2.5" axle drop bracket, F350 springs up front, and F350 rear axle blocks. 260k miles. RETIRED.
NEW (to me) 2005 F350 FX4 Crewcab shortbed, SRW, Lariat, auto, V10. 5600 lbs front end.