Hinges!
I didn't think about that...The other thing I would want to know is if this kit was made specifically for the Challenger. I would be a little worried about a "generic" lambo kit. I have seen some kits on ricer imports, and while they look cool, the welding and hacking required for the hinges was HIDEOUS!
I did see a kit on an older Camaro, and the thing had gigantic gas-charged shocks to open and support the doors. You could lift it with your finger.
There was an older Diablo at the shop I used to work at and the doors were light, and fragile. That door could be pushed up with your finger. I felt clasutrophobic in that thing, and I am 5' 7" 135 lbs! Sheesh.
Later