Is the EVH stuff a snap-on plate?
FWIW,some kinda Steinberger,if that helps any(not trying to be a smart-ass)...
I concur with the re-finished Synapse, Spirit, Yo Music or Höhner suggestion.
The rounded ends to the pickup routs are pretty distinctive. (A genuine "faceplate" guitar would not have these.) This probably explains the baseplate modification on the bridge/Treble position pickup. If the guitar ever had plastic humbucker mounting surrounds, the screw holes have been filled in prior to painting. The vibrato looks very like the licensed one Höhner used.
Synapses don't have trems. A Synapse has a blade switch as well. The headpiece isn't from a Synapse. Most other Stenbergers have 24 frets. My guess it is an Ed Roman creation (cobbled together from parts, and charged a premium price). He is well known in Steinberger circles for slapping together parts from many models. Or, it could just be someone who wanted the SB 'look' without any of the functionality of a TransTrem.
Synapses don't have trems. A Synapse has a blade switch as well. The headpiece isn't from a Synapse. Most other Stenbergers have 24 frets. My guess it is an Ed Roman creation (cobbled together from parts, and charged a premium price). He is well known in Steinberger circles for slapping together parts from many models. Or, it could just be someone who wanted the SB 'look' without any of the functionality of a TransTrem.