[spdbrake]

Is the issue not charging while driving or the battery is low on charge after sitting?

If its draining this may help in looking for parasitic drains.
How to Find and Stop Car Battery Drains

I found this on our forums awhile back.
http://www.clubcobra.com/photopost/d...ng_diagram.JPG

BDR sells this...
Backdraft Parts - Starter Motor for 302/351W - Starters and Water Pumps - Engine Parts - Engine - Products

Identification of which starter to use....
http://www.moderndriveline.com/Docs/...06_30_2010.pdf
Modern Driveline - Which Starter fits a Ford Small Block T5/TKO Conversion?