Should have some ports in the heads to screw a temp sensor into. I would use original sensors, if they fit the threaded port. Battery, on a 70 that's at the horn relay. Which is the main connection point between the alt, battery and fuse block. Really just about any 12v connect will work, maybe the fuse block.
__________________
Hank
70 Chevelle SS396(454), M20, 3.73
My Chevelle
|