It sounds like it was owned by someone with too much money.

I don't know if a racer would bother with chopping up the
floorboards. Some racers would avoid things like disk brakes
becaues it would change what class the car competes in.

I think the number one factor in you liking to drive that
car on a daily basis include:

brake booster
aftermarket sound proofing under carpet
good rubber on doors
good condition ball joints and tierod ends on front suspension
brake booster
seats that don't sag
good seatbelts
windshield that doesn't leak
brake booster


The brake booster won't make the car stop any better. It
will, however, keep you from becoming a muscleman on only
your right foot.