There was a recent post about IM resin kits but I started a new one as this is specific to the Comet II kits in N scale.
I bought these a couple of years ago and they came with smoked glass inserts and IMW's white metal block "trucks".
When I ordered these IM had just listed them as retooled with thinner shells. I don't know if they still include the glass now.
I had the same experience others have had of searching for photos of complete kits but never did find any, hopefully this will give folks an idea of what they are like.
Although I was somewhat disappointed with the kits when they arrived (enough that I put them aside for 2 years) I was able to build them into credible models IMHO.
It was a challenge but it forced me to expand my ability and research quite a bit about resin models and the LED's. I hadn't worked with resin before except for some NSN B40-8 kits back in the early 90's.
Bachmann inside bearing truck top

included IM "trucks" bottom
I cut the molded on stabilizers off as they were oversized and so thick they would have prevented the trucks from swinging. The Bachman trucks have the stabilizer on them which swing with the truck, although they are not right for the Comets I can live with them.
Here is the PARTS LIST,
IM Comet II coach kit with Bachmann inside bearing trucks, styrene diaphragms, Microscale decals, MT couplers
IM Comet II cab kit with Bachmann inside bearing trucks, BLMA E/F model style cut levers and 18" grabs, GMM wipers, TCS FL4 decoder, Ngineering LED's & resistors, Gallery Glass ruby red lenses, .030" fiber optic, custom built styrene pilot and diaphragms, Kato 5 chime horn, Microscale decals, MT couplers (Z scale on the cab front)
Coach and cab

Decoder, LED's & electronics

Power pickup

Cab profile

Although they are not what I would call free rolling, I am able to push and pull them with my U34CH even on wicked tight curves on my sons freelanced US Army HCD layout.
How it would do in push mode with 2 or 3 more coach's added I can't say but I'd guess the HCD layout would probably be off limits.