good luck, i had the same problem. my tranny guy had to call about 50 different suppliers to find one, i almost bought a complete trany from the wrecking yard just to get the pump. if you have to end up going that route 99% of late 60's all of the 70's and some early 80's ford passenger cars that originally came with a 351w or 351c were equipped with the FMX. i'm not sure why there is a problem getting the pumps there are probably more fmx cores than most people realize. i know where there are probably 2 or complete trannies at some the yards here if you really get in a bind