The listing title says it all "...great for track/autocross..." Having spent the dozens of hours to remove the interior (because it simply does not belong in a car to be used for track/autocross) I can tell you, the reader, it is a big plus to no longer be inconvenienced by a silly bunch of interior parts that you won't need. :-)
The next step would be to install a Auto Power full cage, change a few suspension bits - and Bob's your uncle - you've got a fun weekender!
To answer the question, no, I did not save the pile-o-parts that once made up the now useless interior.