That should be pretty easy. The Meshuggah is just an 800 circuit with diode clipping. Typical Jose mod type of thing. Ceriatone has a layout you can use on their website.
That sounds pretty killer. If I could get a tight chunky sound out of the Plexi I’d be pretty satisfied, but the balance is still being able to go back to full stock when switches disabled. I see the new 1959M01 can get pretty gnarly with a boost too. Definitely seems like the Plexi is a great platform for anything haha, Thanks!