CAUTION: Rear Rouded Guitars!
I bought this with high hopes and expectations for an easy drop-in upgrade. Unfortunately I was not able to mount this unit in my 1989 SquierII contemporary Stratocaster. This particular guitar does not have a pickguard it has a rear-routed  cavity  for switches and pots. The circuit board would not fit inside of the cavity without extensive cutting into the body of the guitar which I was not willing nor qualified to do.
Rating: 4 stars