Name that carb!

Hi,
A mate has this carb laying around, and I'm welcome to it if it'll suit my 1600 crossflow.  I thought it looked like a Weber 32/36, but it clearly as Holley cast in to it.

First question is: what model is it?
Second question is: With a cleanup and rebuild would it be an upgrade from my standard single barrel Ford item?
I realise there's a few bits missing, but it'll be easier to figure out exactly what bit I'll need when I know what it is exactly!
I am quite new to the upgrading and tuning side of engines, so please forgive a newbie!

Looks like a Holley 5200 series, which is basically a Weber 32/36 clone, and hence should work nicely on a 1600.

It's a licensed Weber 32/36 copy, so I expect parts are completely interchangeable.  The 26 and 27 refer to the venturi size in mm, and like it's Italian cousin, it has 32 and 36mm throttle bores.  You'll have either green or brass-coloured main jets though; the former being used until 1975, which are marked for their diameter, whereas the latter are post-75 and marked for flow rate.  

I used to run one of those on my warm 1600. Its a 180 holley. I made an adapter and fitted it to the standard manifold.