I bought the projectors from TRS. I only purchased the headlight housings and Fast Bright F3 ballast from eBay.
I dont have any pics of them mounted in the housing. Basically all I did was cut away the 9007 bulb mounting stuff in the back of the housing so the threads of the projector could protrude enough and I could screw on the nut to lock it down. I ended up taking off close to 3/4" of material on the back of the housing.
I used the larger of the two alignment rings that come with it and ended up ordering some new silicone washers from ebay since I wasnt happy with the two choices that came with the projector. The larger ring had more surface area to clamp down on the housing and the new washer I used was a larger diameter but thinner in width. The larger washer that came with it was too thick and the smaller washer was too small in diameter to seal the opening from the inside.
The fitment once installed is perfect. The projector and bulb holder only add maybe a half inch of depth on the back of the housing. They dont hit anything once installed. Basically they dont stick out any further than the stock 9007 bulb did.