I bought my Mach 1 around '96-'97, and at that time the Ram Air motors were not functional. I called around and found re-built units kinda pricey, for what they are. So....being an "ex-parts counter man", I went into the books and looked up air cleaner vacuum motors, physically ordered a handful, with the blessings of the store knowing I was going to send back what didn't work, found one close enough. I needed only to change the bend on the hook slightly to work, and as shown previously, one ear is positioned slightly different and had no mounting hole, but a drill fixed that.
OK, I drilled two new holes in my inlet plenums and mounted them. They have been working perfectly for 20 years now on a car that gets driven every day. So, sue me that I drilled two new mounting holes, but for ONLY $2.50 each, the car is functional, and while not meant to be concourse, the car is just as nice as anyone's.