i found the bulb sizes on sylvania's site, if anyone needs them-
2005 FORD Explorer Sport Trac
High & low beam headlamp
9007LL
9007SU Silverstar ULTRA for Ultra Night Vision - The Whitest and Brightest Halogen
9007ST Silverstar High Performance Lighting: The Whiter and Brighter Halogen
9007XV XtraVision Halogen - The Brighter Light
9007CB Cool Blue Halogen - The Whiter Light
Parking light
3157NALL
3157AST Silverstar Signal Lighting: Complete the Look: Crisp, Clean, Style
Front turn signal
3157NALL
3157AST Silverstar Signal Lighting: Complete the Look: Crisp, Clean, Style
Rear turn signal
3157LL
Tail light
3157LL
Stop light
3157LL
High mount stop light
922
Fog/Driving light
9145
9145ST Silverstar High Performance Lighting: The Whiter and Brighter Halogen
License plate
194
194LL Long Life Upgrade: Up to twice the life of the standard lamp
Back up light
3156LL
Front sidemarker
3157NALL
3157AST Silverstar Signal Lighting: Complete the Look: Crisp, Clean, Style
Ash tray
161
Glove box
194
194LL Long Life Upgrade: Up to twice the life of the standard lamp
Map light
168
Dome light
906
Step/Courtesy light
168
Trunk/Cargo area
906