. . . i bought a vapor blast cabinet that works well for aluminum. i have done a few transmissions with good results. its slightly brighter than OE but will fade over time. The finished surface is not open like a fractured abrasive will do so it will not oxidize over time. Not saying this is the best way as the keyboard experts will chime in that is some how wrong but one option for you if you have anyone local to you with a set up
I’m completely behind you and agree the process produces outstanding results. I’d have done this if I could have found a local with a cabinet large enough. Even looked into buying a cabinet but found these are wildly expensive vs a traditional blast box.
The only other thing to consider is that before blasting the case the trans needs to be stripped, where cleaning and protecting can be easily accomplished without gutting the trans.
