Idle solenoid for Thermoquad question

71 & 72 are different the one 4spd has in his pic looks like a 71 they are being repoped but don't work very well, the original has a part #DR 1110429, the 72 is different it's shorter and looks like the one in the Attachment above. I sold a 72 a few years ago for around $150. The 71 if it has the numbers stamped on it and in good working & restorable condition goes for around $400 this is because it's the same solinoid used on the hemi and 440 6-pack!!! The repop is around $100.