Topic: What kind of exhaust mounts are these?

[Mat]

I have a 1972 cb750k that had stock spigot-mounting, 4-4 exhaust pipes. I acquired a set of 4-2 pipes that I was told came off a 1970 cb750k. However, I've never seen this kind of header exhaust mount.

I'm assuming it uses the later K mounting system, but I wanted to get some wild and woolly advice from the forum here before I made that transition.

Any info?

[seaweb11]

Not on any bike I own.

There, that narrows it down some

[754]

 Stock head pipes.. it must be a stock pipes with muffler cut off, fitted with 2-1 slip-ons.

[Mat]

Well isn't that dandy. Here's a photo of what I had when I bought the bike, and was told was stock. Now, I'm assuming that this is what later K's came with. I still had the spigots that bolted into the cylinder head, rather than the bolts sticking out the head.