Just in case someone googles this: Contacted Velocity who said the hub containing the CHO-13 SEN-03 freehub body had been discontinued and my options where a new hub or new wheel. Determined to be cheap, I did my research on every available freehub I could find which resulted in me getting very lucky and finding a picture of the rear of Stan's No Tubes 3.30 freehub body being measured at 36.2mm. I quickly measured mine to find they were the same. Ordered it and once arrived it fit! Only issue that arouse was the supplied spacer was 10mm just like the Velocity hub but the Stan's 3.30 bearings were recessed further in needing a 12mm spacer. With this new spacer in it fit perfect!

So, TL;DR: CHO-13 SEN-03 freehub body can be replaced with a Stan's No tubes 3.30 freehub with the use of a 12mm spacer. JensonUSA part number HU235E06