Have any of you gone from the 200 4R to a 4L80E, and what are your thoughts after doing so? The reason why I ask is I feel that after a certain power level, the 200 is a ticking time bomb. I have a 200 with all of the billet internals and every time I get in my car and mat it to the floor, I'm worried about the Trans breaking. I haven't added up the cost of building a 200 with all of the billet stuff, however I bet that it wouldn't be to far off from what it would cost to install a 4L80E. It used to be that the Trans controller was very expensive on the 4L80E, but that's no longer the case anymore. It seems to me you could basically install a shift kit and a good converter in the 4L80E and have a very reliable Trans for say a 11.30s and faster car without the hassle of having to build the 200 with all of the billet stuff and then hope that it doesn't take a crap. I know that the 200 is lighter, doesn't rob as much HP, and has been in the 9's on several occasions, but cost efficiently and a reliability stand point, it would seem better just to go with the 4L80E and be done with it.