question regarding new clutch master cylinder

[Eagletucky]

I am in the process of gathering parts to convert the front crossmember on my 61 Chevy over to a 78 chevy. It all seems to look fairly straightforward, but i'm getting hung up on one issue.

The stock setup on the 61 is a combined clutch/brake master cylinder. When I perform this conversion, I will be going to a dual brake resevoir MC. Has anyone found a replacement clutch master cylinder that will work? It also looks like the clutch MC would need to be relocated, as the new brake MC would be in the way.

For the record, I am running 1962 235 out of a 62 Impala, with the original truck 4 speed saginaw with hydraulic clutch. I know I will need to fab up motor mounts, not worried about that. The clutch has me a little bewildered.

Thanks in advance.