If you're lost you can look - and you will find me
Time after time
From the shadow cast onto the body pictured above, it's clear that this model is intended to fit a hole cut closer to the waist of a guitar. Noticing that the faceplate was bendable, I slowly installed the screws at the four corners to see check the alignment of the screw holes in the preamp and body.
To my astonishment, as I tightened the screws, the faceplate bent and conformed the contour of her body. Even the rubber gasket fit nicely, making a consistent seal between the faceplate and the edge of the opening.
With that, the installation was complete, and it was time to move on to testing the new parts in This Old Guitar. I took her body inside, installed a 9V battery in the preamp, and plugged her in to my son's amp. With a few taps on the body, and some fiddling around with the tone and volume controls, I could hear that the pickup and preamp were working fine. After returning her body to the workbench, I logged on to my eBay account to give lvjiajia1703 some very positive feedback and add this vendor to my list of Favorite Sellers.