Yeah, I've heard about that but I haven't seen a proper demo of lenny by j rockett, but I leaned towards the sss instead of this before.There is a brand new Pcb called the Lenora (Lenny) that is also supposed to be an SRV sound.
Not positive it’s been released yet but I saw it was coming soon recently.
Might be another arrow in your quiver?
If you go that route be sure to look up Chuck D. Bones Ice Scream Sammich post for his modsAs Barry said...that Frost Drive is a highly tweakable Tube Screamer circuit. Maybe a little more involved of a build than some but that’s likely your best bet.
As I’m sure you know, most of that sound comes from Stevie’s picking hand.
I’d say 85% is technique and the last 15% is tone.
I'll have to get my hands on one to check it out. The schematics floating around don't appear to match what is actually in the pedal.