cdog4w, how many 3x6 flanged do you need total? FYI we can get any bearing the Boca has (they don't make their bearings, they order them factory direct just like we do), and ours are lower cost and higher quality (e.g. our Dry Racing Mini-Z bearings cost less than Duratrax's crappy, incorrectly sized Z bearings, and are much, much, much, much better quality!). Thanks!