3/8” mechanical pump question

Edelbrock.com: Edelbrock Performer RPM Series fuel pump is for Small-Block Chrysler
Or any of the old Carter pumps of the same style. Also check out boating supply houses, as Chrysler Marine used these pumps quite a bit.
Also
Small Block Chrysler Chrome Mechanical Fuel Pump 8 PSI 80 GPH Fittings 318 360 | eBay
TSP JM1005BK Small Block Chrysler Fuel Pump 80GPH Mechanical, Black Aluminum | eBay
Cheaper, but can't vouch for the quality.