Stay away from the clear diamond housings. Unless they are e-cdoe Rybrig, you will really have a lot of glare. The housings I brought to DriftMotion were the Hella H4 Conversion lamps and yes they cost more, but this is because they are designed correctly and are built well. The most important thing besides the pattern generation thru the lens is the glare reduction with an underbelly shield. You want to reduce ot remove any light hitting the bottom of the headlamp itself. All the light should only hit the upper half of the headlamp.
With that said, the system im putting together for Supra MK3 owners will contain a custom "H4 to D2S" adaptor shield which inserts into the H4 headlamp, Philips 5000K model 85122+ OEM burners and Hella ballasts. Im in the works of putting this together and it should hopefully be available real soon. Its NOT plug in play 100% because you have to make a harness to power the ballasts etc... but what im hoping to do is to be able to supply the parts, and talk to places like DriftMotion who can provide services to do the install for a nominal fee.
I'll see if I can take beam pattern shots within a week to show what kind of output this will provide, and it will give others a comparison shot to show what you should see when doing a HID conversion correctly, not just plugging in a cheap kit and causing glare all over the place, includinf other drivers and creating unsafe driving conditions.
Those diamod clear lights really dont create a good pattern and if you throw HIDs in there it only gets worse.
