Here is an Ebay auction for a rebuilt FoMoCo Hipo distributor by Ebay member "glazzman3560 " with a Buy-It-Now of $940.00:
SHELBY GT350 DUAL POINT DISTRIBUTOR C5OF-12127-E 1964 HIPO 289 Autolite.
Date code 4G8. Remanufactured 5000 miles ago.
SHELBY GT350 DUAL POINT DISTRIBUTOR C5OF-12127-E 1964 HIPO 289 Autolite Ford | eBay
-Fred-
The 4G8 date code in the sellers description is in error as it is actually a 4GB.
-Fred-