I'd also choose the Weber DCOE/Dellorto DHLA/Solex option.
For the reason mentioned above but they also flow better and ...
... they look and sound much better [:D]
On the other hand, a pair of (proper set up) SU HS6 carb's should give you proper results, even if the engine is tuned a bit.
<center>
<font color="blue"><i>1981 TR7 FHC Sprint (better known as 't Kreng)
1981 TR7 DHC (not very well known yet, but back on the road)
Also a 1980 TR7 DHC, 1980 TR7 DHC FI, 1981 TR7 FHC
http://tr7beans.blogspot.com/</i></font id="blue"></center>