My MBX6 is version #1 and it's fine. Don't beleive everything you read on the net. The biggest complaint I heard was about the rear upper arm mount on the front end and after 6 months of running every weekend, Mine is still the stock original one. Go find any first run kit that does not get a half a dozen changes in the first six months & tell who makes it. In the last 3 years I've had the first run of the Eight,RC8,D8 & MBX6. The 6 is by far the most trouble free.