Jaylin, once a PAR becomes sheet metal, it will have all the sheet metal bend variables exposed as Custom Properties which can be searched on:
Material Thickness
Bend Radius
Relief Depth/Length
Neutral Factor
Also, undocumented but works… Files are identical and file types determine the environment. You can change the PAR file extension to PSM to make SE open it in the Sheet Metal environment by default if it is in fact now a sheet metal file just for sanities sake. You can always switch back and forth using the Switch To command.