I would not think that it would be possible as, while the motorised mechanisms are relatively simple, the good manual ones are designed specifically for the characteristics of the chair - ie does it have a foot rest, if so is it required to operate independently of the back rake; does it have brake or does the mechanism allow the chair to be positioned just moving the body.
Cannot say that I blame them. I tried motorised recliners when I first decided to get one over 30 years ago there was not much available but I quickly decided that the motorised chairs were poor. I bought a Norton recliner which was an amazing piece of kit, incredibly comfortable, which lasted 28 years before the mechanism was so worn that I had to get out of the chair to adjust the rake.
When I looked for a replacement I shopped around for ages - the only decent motorised unit was around 1500 from J Lewis (quiet with a good range of adjustment) and the best of the manual chairs was quite good other than the cover was only available in leather and the so-called 'zero-gravity' mechanism needed to be tweaked by me to get it really comfortable when the foot rest was up but the back was in the vertical position.