yes i can i have one here already working which i use as a test card done from scratch.
this does not include my other cards which is the fastest Blizzard card in the word,it will match a Cyberstorm 200Mhz. iv already posted benchmark it`s also the first classic amiga to hit 83Mhz bus.
I believe you can do it, I just don't think there are enough cards in the entire world waiting to be upgraded to make anywhere near enough money to live on.
In other words, that's a nice little party trick you can do, by all means keep your secret.