Need to know the YEAR and what it is in, So I can answer your question are help you fix it.
master cylinders should be same abs works thru an electronic valve , usually away from master cylinder
YES they are the same engines.
They are not the same!
chev impala, chev Monte Carlo, Buick regal, Buick lesabre, and Pontiac Bonneville
because they are not the same cylinders. Same principle, different engines. they are much more meticulously manufactured.
Two cylinders with the same volume are not necessarily congruent. One could have a different diameter and length than the other, and still have the same volume.
No they have different heights and radii.
No. To be similar ALL lengths must be in the same ratio. If two cylinders have the same radii, but different heights then the radii have one ratio (1:1) but the heights have a different ratio; thus they are not similar.
lt and slt are interior trim level designations. both are the same, lt is used by chev, slt is used on gmc.