I have been searching ( the best way to plumb in a heater) and it looks like its done several ways.

From what I’ve read it looks like the best way is to use a (universal parts 1x1x5/8 Y) inbetween the water pump and the top of the engine to feed the heater core hot water, in this hose going to the heater core you will need a 5/8 shut of valve (summer time)….. Then put another (Y) on the hose that goes to the bottom of the radiator that will dump the water back to the cooling system after it goes through the heater core.

If this is the correct/best way let me know please.
If not please advise the correct way.

Any tips would be great as I plan to install one soon.

Thanks in advance.