I have a 66 Biscayne that was originally a three on the tree car. When I bought the car it had been converted to a floor shift. It looks like the transmission hump is not factory to me. I'm looking to put carpet in the car and want to make sure I buy the correct one. I've attached a pic to help. Any thoughts?
The four speed carpet kits are notoriously too big across the hump, even for a factory four speed. So it's your only chance. But it is heat molded for the factory hump which is rounded, unlike your flat top. Maybe a heat gun will relax it.
The first 4 speed carpet I got a few years ago for a 66 was totally wrong. It had the hump dead center, as in 68-69 style. I returned it and got a column shift carpet. I sold the car before installing it but the guy who bought the car from me and finished putting it together said the carpet fit nice.