1986 LeBaron convertible, 2.2L T2 with A413. 1989 J convertible dash and console modified to fit.
If you can find a similar car to compare that is a factory convertible you will see what IC is referring to. My 1986 Lebaron convertible has all the reinforcements on the inside of the passenger area. The main one looks like a stretched sideways letter H with the uprights going across the front and back of the foot well area. This piece is probably close to 1/8" thick, the crossbar of the H is down the center and is about 2" above the normal floor tunnel for a K car. The result is a very solid topless car. According to my son, much solider than his 1999 Mustang convertible.