Halo Head Lights

[ddr11]

I have an 87 step side that I did the 88-91 Blazer grille swap on and I am trying to find as LMC calls them 150MM headlights that have the halo and projector bulbs. I see all kinds of halo lights but they(the vendors) are referring to them as 4x6 or 5x7 rectangular. Does anybody know who sells halo lights for an 88-91 crew cab, blazer,suburban. I've looked at angeleyes site but am confused by the wording ie. 150mm vs 4x6 etc