[6pack] Hitachi SU conversion

[Bob]

Hello,

There is an add on Ebay from Paltech offering a Hitachi SU HS6 conversion for 
TR6's.

Has anyone converted to either SU HS6s or this Hitachi SU HS6?

If so what is your opinion?

Where does the vacuum advance connect?

What about air filters? Take the stock setup?

I would prefer to convert to SUs since I have zero experience with ZS carbs 
and since the ZS would have to be rebuilt anyway it is not an issue of $.

Bob