The guards are Seibon, they are the same guys that did the bonnet on my car. They are fiberglass with a couple of layers of carbon weave, I would be surprised if they fit any better than the parts I bought.
In regards to the bog, I haven't even taken 500gms from the tin yet and most of that ends up being sanded away, there will be 10x more weight of paint go on the car, it just looks a lot, but there isn't that much there. I am just fussy about the finish, i want as close to a mirror finish as I can, but that is me. I don't consider a dent free car to be straight unless what is reflected in the paint is clean. It is kind of hard to explain, but have a look at most cars that have had done what I an doing if you see a picture of the painted parts, have a look at the clarity what is reflected in that and what happens to that image if you move around the vehicle.
I am just taking the time whilst the car is down, to do the best job I know how to on the body. The body kit isn't that bad in fitment and compared to the $10,000 price tag of the NISMO front end, it gets to suck up a few hours making sure it will look the part.