What vintage engine and car???
I assume it's for your 64...
Do you have the original V-8 style radiator??? They are different than the slant 6 one...
If you have the correct time period radiator for an early A (64 - 69), then you need to use the cast iron water pump and the timing chain with the timing marks on the passenger side so the lower radiator hose will be like the original 64 - 69 molded hoses...
Then get a set of pulleys from an early small block from 64 - 69 so the pulleys will line up and keep the belt in line correctly....
If you are not using A/C, then you want a single pulley alternator and the pulleys from a non A/C small block from the sixties (64 - 69)... The water pump pulley should be the 'bell' shaped one for that time period... The chamfered angle water pump pulley is for the 70 and later style with the aluminum water pump...