I have an AVT going right now that was dusted with Onyx pollen that will produce regular seeds. I was thinking of making my own auto sativa (probably using something in the Durban Poison family) that way, but its a 2+ year process to cross and back cross. You could also take one of the regular hybrid autos and back cross it into a sativa dominant auto like Mexican Airlines to shorten the process.
For some reason nobody wants to do regs anymore (we all know what that reason is). Short Stuff has pretty decent auto regs, but nothing with really dominant sativa. I wish Mephisto would sell some regs, man I'd break the bank for those but obviously giving the general public regs is not a very good business model.
Was your Onyx from Short Stuff or Flash? I know they have the same origins...
Why would it take 2+ years? Do you mean to stabilize?
I figure
P1 auto x P1 photo -- grow out, to dried seeds ... 4 months.
F1 ("fast version") x F1 ("fast version") -- grow out to seeds ... another 4 months (8 months total).
F2s 1:2:1 of auto:fast versionhoto. Find the autos after maybe 1 month, grow them out another 4. (12 months total).
F2 x F2 ... should be mostly autos, no?
I know real genetics will be more complex, but should have something working by a year.