DON'T DO LAMBO DOORS! I have them fron lambo tech. They are rubbish. I only put them up for show (which i hardly go to anymore). You will end up just squeezing out of the soop all the time because you cant be bothered wiht the effort of lifting them.
If you do go for them however, in my opinion, the only kit worth getting is the GTF kit. It has twin rams and can actually be opened when your sitting down. You will need a good fitter though as it is a weld on kit.
Before i get slated for being against lambo doors, it is my bad experience with them that has put me off and currently saving up to have them taken off.
Although they do look impressive when up.