evilblackdog,
The unit on the back of the machine is called a Dimas unit. It was made by a company in Denmark for the 1295, 345, 335, 1245 to put toys on the machine. You can order the front stitch length plate and the reverse lever rod form Pfaff. You will also need a standard throat plate, feed dog, inner and outer feet. Save all the Dimas parts. I have worked on them and that unit is no longer made. You can remove the trim knife as well from near the hook. Take motor, control box off. Contact me with anymore questions. Obviously, you will need a servo motor. Save all parts.!!
glenn