The Elio is primarily off the shelf parts, a maintenance manual would be ok but a list of what parts are from what would be ok too. I had to keep a list for my 67 valiant to get the right parts for it - 383 motor and trans from a 72 New Yorker, Front brakes + rear end from 71 Duster 340 and many other parts assembled randomly!
This is where the Pepboys website will come in handy, since they are the people responsible to fix the car they would know the parts. So, in theory you could go to their website type in Elio as your vehicle pick and what part you are looking for such as front brakes and it would list parts that fit your vehicle. This is how it works with my current car I don't see why this car would be any different.
The Automotive Aftermarket Industry Association (AAIA) has a database in place for automakers to submit all this data so all the parts stores know what parts are needed to service whatever vehicle. It does not even cost the automakers anything more than the actual gathering and sorting of the data they need to submit as the auto parts industry pays for the system. I am sure this is what EM will do so you will be able to walk into any parts store and pick up the parts you need.