Howdy Newberry84, Congratulations on your purchase.
Mr Shawn likes to throw the book around, and it usually hurts when hit by the book!
My understanding (size 13) is that if it is written in the technical publications by Sportcruiser then it is legal to install in your Sportcruiser.
tech-publications, IPC, Service bulletins, Maintenance manual, and what ever technical publication by SC I didn't acknowledge here.
Sportcruiser is unique in this manner of what can be installed in a Sportcruiser and how they allow it.
Sounds like you found the right DAR for taking your SC experimental.
Take some time to look into the technical publications, there is a lot of interesting items that can be installed.
If you need an LOA, parts, etc. seek Thrust Flight and ask Patrick what is possible.
This forum has a lot of information, and many great contributors are here and very helpful.
Smitty