I just bought a G35 and I'm thinking about dropping it. Do I need to take it to a proffesional mechanic or is this something me and a friend can do?

Try it and let the forum know. How handy are you with your took kit? Or your friends?

^this man we don't know your mechanical skill, but If you have to ask you by yourself probably couldn't do it.

This was my first coilover job, and it took me about 4 hours on a Sunday. Friends helped a bit at the end.

But you have to have the right tools. Check out the DIY, I believe I used something to help get everything apart.