Please ID this Carb

[chasanderson]

I have a Q-jet Carb I found at a garage sale. Metal tag #s are 5C/3493, markings on carb GM 17056240, 2835 A02. Like new condition. Can anyone ID what this was used for and would this work on a 401?

[Smartin]

170 = 1976-1979 ID
56 = 1976 Model
2 = 49 State carb (Non-california emission)
4 = Buick
0 = Automatic Application (even is auto, odd is manual)