Can Thermoquad throttle plates be exhanged from different years?

But so inspect that both of the parts being exchanged are otherwise the same! All 3 parts of the TQ can change ever so slightly. Most easy to see is the top cover followed by the fuel bowl. The fuel bowl can change a lot on the inside while the outside looks the same.

I have not noticed a change in the base in different years. Probably because I wasn’t looking. Like I said the tops are easy to spot. The bowls can have a few external difference but remain the same on the inside as well as have no changes on the outside and be very different on the inside.

Just use your eyes and head.