I've noticed that the LED turn signal bulbs I've used in front (switchbacks) and rear (7W yellow LEDs) are just not that visible during daylight. At night they look great but I can see it being tough to see them during the day. It's odd how they seem brighter than halogen at night but dimmer in daylight, I think it has to do with the spectrum of light. You will want to use some high power LEDs if possible. The front spot does accommodate switchbacks from v-leds but those are about as big as I can fit in there as they just about touch the sidewall of the reflector they sit in, the back ones have lots of room for whatever you want.
[size=6pt]Mods: 17x7.5 rims w/ Conti DWS tires | 4 75W kicker speakers | Memphis 300W amp | full size spare | BC Condenser kit w/ extra grounds | CS SRI w/ box | timing advance | upgraded horn | CS LED kit | Axela badge | alu pedals | Momo shift knob | Alu fuel door | footwell LEDs | VTCS delete | TB coolant bypass | L fog light vent | bi-xenon HB/LB | HID fogs | SB LED turn sigs | LED DRLs | LED reverse lights | painted foglight trim | LED tail lights | LED reflectors[/size]