I don't think this actually answers your specific question, but is SOME information:
http://busdepot.com/catalog.jsp?model=57&category=20

Both years are the same P/N at BD.

bob

On Jan 22, 2011, at 12:48 PM, zzyzx wrote:

> 280 150 106
> 122 906 031D
> 
> Would the above part numbeed fuel injector from a 1978 type II van
> cause/contribute to fuel injection system problems/failure on a 1980
> Westy with electronic ignition system?
> 
> Blue injectors on 1980 westy
> The above part number is a gray injector.
> 
> TIA
> Steve