FWIW, From my investigation , 2 ways for synth access.
roland GK device slaps on top, a thin 6 pole magnetic pickup and the converter to 13 pin output are one unit.
RMC makes a piezo replacement bridge piece in strat and several other formats, you only buy 4, and drilling thru the baseplate and another one to the edge, for the 4 signal wires is the major modifications,
larger hole for an onboard implant of polydrive 1 circuitboard converter , or as I preferred, DIN 8pin on the body an 8 pin cable to an offboard black box "polydrive 2"
seem like a lot of work on a $200 instrument? but then again
bridge/ pickups are about 50 apiece. external controller /converter 400,some delicate soldering and drilling holes from under the bridge to the edge. [bigger hole for onboard direct output}]
, steve ryder builds a plug and play RMC pickup equipped model on his option list.
Its on the Les Paul Jr sortof model ..1500+220/260+600
now roland has several models of modules.
Athe one that has no internal sounds will borrow the MIDI ones in a keyboard.
writing about music
is like dancing,