87 2.2 carb issue

ive got a b2000 1987

somone put a 2.2 out of an 87 into it.

my carb pooped out on me.

im looking for a rebuild kit. no auto parts store has one.

anyone know where i can get one?

also

weber carbs question

do they come on any stock truck applications i can pull off at the junk yard if i find the right truck?

any help is apperciated!