I'd be interested to hear suggestions on this too, as I'm chasing a similar tone.
Have you checked out the
EBS Metal Drive?
Maybe mixing that with a
Fultone Fat Boost or something similar would get you close, maybe...
Throw in an envelope filter of some kind?
I need to go to a place that has a decent selection of pedals so I can mix and match, but there really isn't anyplace close by for me...