Focus #1 (2004 bolton ZX3): Constant electrical gremlins, hydrolocked engine due to CAI + Florida rainy season, smashed clutch due to accidental downshift into 1st instead of 3rd, bent wheel, tie rod & control arm from getting run off the road onto a sidewalk at 40 mph, tore up passenger side from overshooting a turn and ending up in a hedge
Most of those were definitely my fault.
Focus #2 (2002 PWSC ZX3): No problems from Ford parts except normal wear and tear (leaky head gasket @ 115k, burnt out or weak window/sunroof motors, sagging hatch struts, dead clutch @ 100k). Some issues due to PWSC related items, mostly just with the oil filter relocation system but that has been resolved (I hope).
The 02 has been a much more solid car overall despite the strain of being boosted.