I'm probably going to build my own headlights on my 2007 F150 and I want Halos. Does anyone know the diameter of the reflectors for the headlight and turn signal so I know what size halo ring to buy?

 

Just buy the kit for an F150 and they'll fit perfectly.

 

 

Mine are oracle but if I did it again I'd get the ones that have external drivers so if they go bad you can replace them easily.

 

Already been down that road. Go with LED concepts kit got one for $135. Trust me don't try and make your own kit just buy one. You can't beat the quality and you don't want to have to reopen the headlights. Retros aren't cheap just save up and do it right the first time.