I have had many Zs from a really nice early 71 240, to a 78 280.....
I bought a new '78 Jeep CJ5 in hs, and would occasionally day trade it with a good friend's 280...I trusted her . Loved it, and I would be all over a 240 in a heartbeat...saw one a few years ago and he still had the original carbs. They lost me when the ZXs came out though....