[Tigers] finding an engine part

[Rollright at aol.com]

Hello,
 
After my original 260 engine was rebuilt, I got a small supply of "extra"  
parts returned to me. I took a look this morning at a set of 8 parts  
(CLUE!) After thinking about it I took out an exhaust manifold. Lo and  behold, 
the part in question is a weird sort of locking washer,  bent,  stepped, with 
two holes for bolts and locking tabs, one unit for each exhaust  port. 
 
It is shown in Tiger Parts List supplement in illustration Plate B -  
section AF and called out as # 129, and described in  the   "locking tab-Exhaust 
manifold mounting bolt"  Rootes #  6100040 and Ford # 
C20Z-9A447-A.
 
Does anyone know if this part is still available, and does anybody have any 
 idea where I can get 8 new ones?  

Jim  Armstrong
Mk 1A 382002083
LRXFE