I believe the V8 60 pump rebuild kits are kind of plug and play. You unscrewed the old internals using the V8 60 specific spanner and put the new one in. These kits are available. I'd check Ebay and the like.
https://www.ebay.com/itm/14298847061...Cclp%3A4429486
I believe the seller above is the old Kanter Auto Parts
https://www.ebay.com/itm/27615195100...Bk9SR66Hy-uqYw
This style is what you typically see. The complete unit.