Too cold in a Lotus, great news, I am so happy it worked for you. BTW, I just added part 3)
I purchased a roll of Frost King (12"w x 1/8" thick x 15' long) self adhesive foil & foam from Lowes. So far all I have done are the Heat Soak mods parts 1) and 2) (photos 6, 7, & 8). The interior of the car remained noticeably cooler on a recent 80 degree day trip. Normally the Elise is a warm ride even in cooler weather.
Today the outside temp was a humid 86. It was the first time the car was too cold while running the A/C.
This is an excellent mod!