Joined: Dec 2007
You can probably get them from Jegs, Summit, etc. The eccentric has 2 dishes to it and a 'tab' that sticks through the hole where the dowel is sunken. The long dowel normally sticks through the dbl row gear and out to protrude enough to slip the thick FPP eccentric on. I had the small pin pulled out because I didn't like how thin the cheap 1pc. eccentric the machine shop gave me was and the 2pc. were just as thin. The FPP one is thick and won't wear through, it has a hole that the dowel goes through vs. the tab.
I can post pics later when I'm home if it helps.
Make sure you have the right sprocket with the right eccentric, the sprocket for the 2pc. is thicker at the center (IIRC) and if used with the wrong eccentric will rub against your TC cover causing metal filings and eventually a hole. The 1pc. sproket is not as thick at the center hole (easier seen if you put them next to each other at a parts store counter. Being a double roller doesn't make the center mount any thicker.
Edit: just checked summit and there are also 2 different sized bolt holes in the center of the eccentric for the cam hole also- 3/8" bolt or 7/16" bolt for the one piece
'67 Coupe 289 stroked to 333, AOD, 9" w/3.50:1, PDB, Candyapple red w/red deluxe int., PS, ext. decor group, light group, foxbody seats.
'09 Black Warriors In Pink with glass roof - the wifes Mustang.
"If it ain't broke, I haven't fixed it yet" -Jon