454 and TH400 in a 70 C/10 Questions

[hewl35]

I asked this question in the drivetrain forum but thought I'd ask here also since I'm sure I'm not the only person that has done this swap. I have installed a 76 454 w/ TH400 in my 70 C/10. Now I have two questions:

Question #1 Heater Hose connections: Off the stock intake manifold I had a heater hose running to the radiator. But for the life of me I can't remember where the other heater hose connection is from. I thought it had to come from the water pump but their is no nipple. So where does the other connection come from. I can't use the big block radiator since it's too big. So I plan on using a stock style 4 core radiator.

Question #2 TH400 Kickdown switch.
I have the complete accelarator setup from the 76 except for the cable to the carb. How do you wire this into the 70 wiring harness?

Thanks