Thanks everyone! I love options.
The Faital looks interesting, but on reflection, when I was thinking about modding the cab, I forgot to take into account my tragic lack of practical skills. You know when you write or mix something late at night and it is THE BOMB and then you listen to it in the morning and think "Ah................ maybe not". My GAS is usually exactly like that.
Phil, when you say the 3012 models well, could you briefly expand on that? That is the speaker which a lot of the super 12" cabs is based, no? I totally understand that they are in bigger cabs and that would have a serious effect on speaker performance. I was surprised at how big my ACME 12" cab was, but it was a thing of joy to play through (regrets..... I have a few.......). I presume the 3012 would be less prone to farting out than the original speaker?