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Im installing a new walbro pump and also doing a rewire mod. My question is, do i leave the little box (voltage regulator?) by the stock pump or can i remove it. I plan to feed the relay from the stock black/yellow stripe 12v, just want to know if i can do it before the voltage regulator or after.

blue decal Says OEM, but I don't know enough to tell.

Looking at getting a fan controller kit similar to this: http://www.autohance.com/mishimoto-mmfan-cntl-uprobe-adjustable-fan-controller-kit.html?gclid=CN61lKK_98UCFYMCaQodFjgAIQ for my CX Racing fans. Question is what is the thread pitch for the thermo sensor bungs in the radiator?