New to bikes, need some insight

[DirtyDan]

Hi everyone, new to the site as well as bikes. My name is Dan and I'm from Iowa, would love to meet any local members, but that's not why I'm here

I bought a '79 CB750 k model I believe about 3 years ago for $100. It was in pieces. Previous owner tore it down to rebuild or something and never reassembled it. Its in good shape and I'm trying to revive it as a brat bike.
I have recently started to mess with getting it back to looking like a bike again so I could sort out what I was missing.

I was searching for the missing front caliper on eBay and came across a set for cheap. Once it arrived, I realized it was for a 750C model. I assumed that a dual caliper setup would still got my single caliper K model... which I assumed wrong I think.
In an attempt to either salvage my purchase or find the correct setup I have come here. I'm finding it difficult to track down a K model single caliper.

Appreciate all the input I can find.

 

[amc49]

'79-80 CB650 and 650C use it as well as the early single disc CB750C. Possibly the CB750L too. You're looking for the Tokiko caliper, not Nissin. The early F uses single piston but it is the Nissin. Somewhere around '81 and for sure '82 they went to dual piston.

 

[DirtyDan]

Thanks for the reply.
A bit of searching ebay for 650 parts yielded a good match.