find an F/N action muaser it already has the straight bolt and it shoots better
I bought mine for 30 bucks out of a parts barrel at a mom and pop gun store out by buckeye lake
yep mazda injectors looks like they sell for about 25 bux apiece new might try to ebay them....
if you need 42lb injectors for a ford look at the 2bbl tbi cars from the 80's at the junkyard they use two 42lb mpi style injectors per car