Just a question,
If your Thermostat is stuck open, (or missing) what problems would you encounter? (besides the obivous low water temp).

Would the vehicle run really rich? Would you get the smell of fuel in your oil?
My BII runs really rich, but sometimes it will "snap out of it" and will have more power then I know what to do with. This only lasts for a gear or two. The temp never reaches above the lower line in "Normal"

I have replaced the TPS, and had the carb partially rebuilt.

Any suggestions?