carbon fiber

Tyler,
If I may ask how old are you?
You sound very enthused about carbon but are not listeing to the practicle side of things. Yes SCRIMP will work on all parts small or large. You are starting out with no knowledge-base or experience. I urge you to start simply, rather than jumping into a complex field and process too deeply.
The end result of a bagged wet layup and a SCRIMP layup is exactly the same. You are using vacuum and atmospheric pressure to consolidate the composite part. The best part is bagging is simpler requires less hardware and hence less money.

As far as reading about it try going to "Composites" magazine and looking in their archives. Maybe a supplier like "Airtech" will have some books.

As far as bumpers go, is the car for the track only, or will it be run on the street?
If it is for the track, have at it, impact resistance won't matter.
If it's for the street stick with steel, yes kevlar has great impack resistance. But to have the type of impact protection you will need and to be legal or sane there will have to be alot of engineering done.
If you are thinking of laminating the steel bumper with carbon, there is a second problem to Dustar's of thermal expansion which is a dielectric moment between the carbon and steel. In an exterior wet invironment the carbon will rot out the steel at an alarming rate. I know this from applied experience!!! Kevlar won't have this problem, It has the problem of not being UV stable!!!
Hope this helps
Andrew