I've been looking at LED halo rings from Morimoto as one of the mods I'll do to my car in the near future and I need to know what dimension halo ring should I buy? They come in 60mm, 70mm, 80mm, 90mm, 100mm, 110mm, 120mm, and 140mm.

I need the dimensions of the area highlighted in red:

 

90mm for the top and 60mm for the bottom here is mine

 

Do the bottom halos require any modding? The projector shroud looks cut off in the corners.


Also, I went through your thread on the Morimoto review to see some pictures and I noticed your bottom halos are a different color/slightly dimmer. Was this on purpose?