I'm planning to use a tilt steering column from a Chevrolet van or similar.
From what I've heard Cadillac steering columns very often have both tilt and tele function.

Why are not tilt-tele Cadillac steering columns from, let's say the early 70 to mid 90, much used on hot rod's?

Are they ugly compared to the round, relatively thin Chevrolet column?

Other reasons why they're not used?