Many know I have been selling SKF engine bearings, the same as stock CMB bearings, for a while now. Very good quality bearings. Here are the sets and prices.
Set #1 - $25 Fits .21 size for MAC and just about any CMB 21 version
Set #2 - $30 Fits .45 size for CMB HR, VAC, V5. MAC45, New OPS45...