It all depends on what you are trying to get out of the 1776cc.
You need to provide more information about the engine.
i.e.
What cam, heads, headers?
How far up the tach do plan to take it to?
Ii have a 2165cc with dual Dellortos 36s (according to what i have read are equivalent to Webers 40s). My cam has a low duration and I rarely go beyond 5ooo rpms.
I would recomend dual Dellortos 36s , 40s or Kadrons 40s and you may also be able to run a single kadron and I think Cip and Avr both can supply them.
Best of luck.