help! My Pup's sick!

Hi all,
My dear 82 Isuzu Pup is very sick! She's at Sunnyside Auto and needs a 
Dropping Resistor and 2 glowplug relays. My mechanic says the parts are 
discontinued. I know there are probably a few Pup owners on this list 
and I'd greatly appreciate any advice on where I might find these 
parts. Thanks!
Raevyn
http://www.raevyncarney.com

"My desire to be well-informed is currently at odds with my desire to 
remain sane."