I don't think it is a 158.1660. Those were convertible machines with a free-arm. This looks like a flat bed. If you look on the back of the machine, I think it will tell the model number. You can probably pick up a better cabinet for it on Ebay or Craigslist. Older Kenmore machines were built like tanks. They are made of metal and built in Japan I believe. I like the fact that they are mechanical instead of computerized. As long as you keep it clean, and oil it regularly, it should serve you well. The quality of these older Kenmores is outstanding. This machine will probably outlive many of today's models.