on the clutch the easiest way is to take the stock cylinder and flip it to fit under the dash. you basically cut the ear off the bracket and move it up. and then flip your linkage.
and on the brake booster the easiest most popular thing is to swap it out with a smaller booster. a geo metro,suzuki swift and ford festiva. the 93 and down metro is smaller then the 94 and up. and the swift is actually the smallest in diameter ive found