The intake I have definitely does not work on a hardtail Z50. It's pretty well aligned with the bike centerline, which means interference between carb cap and frame spine. I don't yet own a complete softtail Z50, so I can't say for sure on one of those, but I'd guess the same problem would arise.
So I found this guy in Arizona with a bunch of ATC parts. I bought an ATC125M intake from him a few weeks ago, which is the same general port size and flange layout as the 70 heads, but quite a bit longer. And like the ATC70 intake, it's offset to the left, allowing it to clear the low ATC frame spine. Now that I have it I realize I may need to get creative with the air filter to fit it in there, but if I end up doing my own Heinz 57 mellow big-bore stroker farm motor idea, using a 69mm tall cylinder, it might create just enough extra room to avoid unsightly elbows or something to get a filter in.
Anyway, I will continue to try getting you photos of the carb, but realistically it may be a couple days before getting the memory card, getting somewhere I can upload photos (wife's outta town with our photo computer) and whatnot. If you don't want to wait for me I understand. But I definitely don't have a bike that this carb will work on, so it's not going anywhere anytime soon unless you or someone else buys it, and you've got first dibs at this time. I'd love for it to find a loving home, especially in exchange for Mexicanyella bike funds or spare parts.
I'd also be happy to refer you to the Arizona guy, or send him an e-mail asking about it myself, if you like. He may have an entire ATC70 intake and carb, as far as that goes. But obviously the morally correct, conscientous, all-around decent thing to do would be to buy my carb...or trade me some other parts for it. Hey, but no guilt trip or anything.
What year Z are you basing the Heinz on? Is some or all of it in the "Let's see everyone's Z" thread? I'm interested; I like the mix and match approach, especially if the outcome is a good-runnin rat.
Edit: this is an assumption, and you know what they say about when you assume...but if an ATC70 intake bolts to an ATC70 head, and an ATC125M intake bolts to a 70 head, wouldn't it seem logical that an ATC90 or 110 intake would also bolt to a 70 head? I'm guessing the 90 and 110 ones are longer than the 70 ones, maybe shorter than the 125M one. But my point is you may not have to limit yourself to the 70 piece.