replace heater core in a 1991 Chevy work truck 1500
How to remove and install the serpentine belt on 1991 Chevy Blazer with AC?
how to replace the rear seals on a 1991 Chevy S-10 pick-up truck
YES. Almost everything will interchange.
YES they are the same.
Sure, You will have to change everything,motor mounts,computer,wire harness, exhaust, etc...
1988 to 1991 most parts are interchangeable - body styles an other things changed after 1991
1991 Chevy s10 how to replace outside window weather strip
That will be a 700R4 transmission.
YES, They are the same.
sould be on the manifold