if you want to test the oil pump you can pull the distributor out and drive it with an electric drill. you just need a hunk of rod about 1/2" diameter and you can file the end with a flat approximately 1/4" thick , if you look at the distributor driveshaft you can copy that dimension. your rod will look like the distributor shaft only about a foot or so long and with no gear on it.

perhaps you added the oil cooler to fix cooling issues and have removed it now..

mine was overheating and I unsoldered the top and bottom of the rad, made wooden sticks to fit the tubes and inserted them and cleaned each one out then soldered the rad back together. I had it in a laundry sink with a few PSI of pressure to check and remelt the odd spot where I got bubbles, and I sprayed it black after. It had a dramatic effect on the cooling ability. If I did it again I'd probably not remove the bottom of the rad. The more sensible way is to just send it to a rad shop and use money instead, but at the time I was a bit short on that stuff ;-)

rebuilders have better setups but I just used a torch.
for the water bottle I made a reservoir out of a hunk of 2" copper pipe, painted it black and fitted a rad cap to that. It replaced the plastic bottle.