You are my "brother from another mother". :-)
You won't be surprised, but the Speed Sport roadster has a nickname. Since at least the sixties, it has been called "Old Noisey". It could be because of the header pipes that ran all of the way to the back edge of the body!!!
I saw one of the roadsters run at Indy in the sixties. I also saw the Speed Sport dragster with the three JATO rockets in the back. Now I will make you jealous. I bought one of the very earliest steel 26-27 bodies from the roadster for $25. It had been modified to pull a fiberglass mold for the new blown version. I tried to give it to Garlits museum, but he didn't want it. I eventually helped to get it back into the hands of Red Greth, who still has it today.
I also was lucky enough to see "The High & Mighty" run at Indy in '62 or '63. Love those wild headers! Great memories!!! :-)