I recently looked at the kind of guitar pickups that can be easily installed onto an acoustic guitar (the kind placed in the soundhole with a cable that runs from the pickup to the amp.

I'm thinking of getting one for my acoustic, but I'm not sure if one would fit on the mutt of a guitar I have. The guitar I'd like to put the pickup on is a 40+ year old steel string guitar with an ebony fretboard and classical headstock (inlays on the 5th, 7th, 10th and 12th frets) The entire guitar is red with a sunburst (with a black binding around the body) and a knockoff hummingbird pickguard...The soundhole is about 8.5cm wide.

Would a soundhole pickup fit?

10 extra points and a hug to whoever can tell me what manufacturer or model of guitar this thing is