Yup, there are places to enter engine, trans, and axle data and also RPO data.
The db will take a hit on accuracy and usefulness by self-entry. But it's still much better than no db! Part of the power of our db is I can search for certain terms and know they will be spelled and formated correctly to find them - Has rear brake valve, VIN on engine pad, etc.
Having it based in Excel and using the autofilter mode makes it a really powerful tool.
Nice thing is that the format is applicable to other car lines, so you can enter big-car and Camaro data from LOS too.