I was wondering if I used the sp to mp glitch with the adder, and asked someone to sit in the car while I proceed to go in my garage and yet another friend uses the tank to blow it up, if that would ensure the adder?

If this doesnt work, can someone please dupe me the adder with both primary and secondary colors being Matte black/pearlescent florescent blue? I can try to give something in return but I don't have much. If I receive this car I will be duping it, so if you are to busy, dupe it for me and I will dupe it for others.