SR3 Save Editor C

Ironically speaking you can get around 160 vehicles total if you use certain tricks/mods to get more than one reward vehicle etc. Could you actually update this to support 160 garage slots for people who did this? Or at least tell me how to edit it myself to allow 160 so it does not delete my vehicles.
 
I apologize for being 'that person' but i seem to be incredibly stupid and have no idea how im supposed to open or use the save file editor, could someone please help me?
 
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