Hi Chris, This is what I used on mine and it fits perfectly: https://smile.amazon.com/gp/product/B0002BESIM/ref=oh_aui_search_asin_title?ie=UTF8&psc=1 Dan
Hearing loss is kind’a wild at 66 now and having backlines of Mesa Boogies and twin/super reverbs and deluxe reverbs a rehearsal room with a gnarly back line and for rehearsing with no band I ran CD and other sound sources through two bridged amps 3000 watts peak per side with JBL trapezoidal speakers from flying arrays 18-20” and horns. Did the tele/ twin or super reverb dance in late 60’s and now at times and toss in that I worked B52 bombers in the early 70’s quite noise intensive I can hear great EXCEPT in the range of guitar and that covers a lot of frequencies from normal life - use attenuated ear plugs or frequency compensated aides made to pass all frequencies in audio range with boost and cut functions to ensure flat and or workable compensations ps if over 50 have your left carotid arteries listened to, the doc is listening for a squeak or swish. Might keep you from stroking out My 2 cents
How are you securing the head unit in the stock opening since aftermarket units down have the clips like the stock Becker. Is there a bracket?
Has anyone changed the speaker wire from the head unit/amplifier to the door speakers or are you all using the stock wiring?