Richard,
I keep re-thinking the cooling system... I am pretty certain the radiator, fan and ducting will be fine, and I went with a Dedenbear electric pump to gain some interior space. The Dedenbear design has the pump motor running vertically, most pump motors are horizontal. The fan is controlled by a thermostatic switch, relay, etc. The pump I wasn't exactly sure what I wanted to do. I wasn't sure about a thermostat, but there is one in the housing right now. All this re-thinking got me thinking about a digital pump and fan controller:
http://daviescraig.com.au/product/lcd-e ... 2-24v-8001
I assume with this controller, fully programmable, I wouldn't need a thermostat, maybe just a restrictor plate of some sort. The above part isn't cheap, but it seems like a very good solution for my concerns. I think I mentioned I have not driven the car yet... still some things to complete, I am looking at the end of May for completion, at least that's my goal. Have a little bit of adjusting/trimming of the coolant lines where they come up from the floor passing through the trunk, and have to get a throttle cable/linkage. I'm finishing up bodywork and painting jambs now, also finishing up wiring for the rear power windows. Need to adjust doors and glass, put seats/carpet/dash in, and minor stuff to complete. Oh yeah, rebuild the front suspension too! Good thing I am retired, I have the time...
Just got an email from them regarding the thermostat "When using the EWP controller, you may not need a thermostat, however in some cases a thermostat is needed but we recommend putting 2x5mm holes in it to allow coolant flow. "