It will not work, but it will likely bolt in. The 4.3 is a very close relative of the small block V8
Yep
No, Not even close.
Yes it will, if the 350 intake is from a pre-1987 engine.
Chevy 350
No
yes
yes
YES, It will fit right in it.
ya...its a sbc...they all interchange
Chevy did not have a 350 in 2001 engine options were 5.3, 6.0. or big block
No it will not. A Buick and a Chevy engine is not even close to being the same. Inpossible. SORRY
No. The 235 had a totally different bolt pattern.