Alternative Carburetor + Coil + engine model

I have an ST or CT 70 engine in an MR50 frame (like it when I got it)

Because of the frame, it has a unique Carburetor, it is a keihin and has these number stamped on it 625A (https://imgur.com/a/ysxMmCl)
I am also after a new ignition coil



I have three questions

1. How to tell if my engine is a ST70 or a CT70? - engine has Hm-D2 and 72cc written on it

2. Any help Identifying the carburetor? I know its not the original but it suits the frame and has run great for years

3. Type of ignition coil so I can buy a new one?


Thanks for any help

I called a few wreckers today, and it looks like the Carburetor is off a Honda super cub, possibly a c70

Maybe my engine is not a st or ct? does anyone know if these are similar?

Hi jdhound, the ST and CT and C70 are all very similar to look at, the place to look for the engine number is on the left hand side if you are sitting on the bike and it is on the side of the engine right near the bottom like the picture

Thanks for the tip, after scrapping off some gunk I finally found it "C70E"
Am I an outcast now? Haha I dont think they have a C70 website.

I have ordered a carb, now all I need is an ignition coil, do you know what one I should get?

Thanks