929 carburetor question

[straight6chevyguy]

So I have already asked this question in my build thread but did not get any answers so I figured the main board would be a better place.

Truck is a 1965 c10 to c20 conversion with the 292 inline 6.
Engine is not original but I believe it is period correct.

Right now I am using the carburetor in the picture below.
I know that it is not the original carb for this engine. (Original being the rockchester B)

So my question is has anybody else used this carb on these engines & or is it a good or bad idea?

The truck seems to run ok with it but its a little hard starting.(carb could just need to be rebuilt)

Some help would be appreciated.