300zx. Can't depend on the 300zx stuff alone. Fact is a lot of 300zx owners cannot/do not want to spend the kind of money to build a z correctly. A vast majority are kids that want hp on the pennies. I spend a large portion of the time counceling people and that's not enough to run a family :). There is a small percentage of z owners that's will to spend what it takes to do things right and they get a lot for their money.
I do this because I love what I do not because I make a killing doing it. Further, there is a giant step that needs to be taken going from a one man show to a multi employee shop. A lot of people do not have the commitment to do things right day after day for what seems like pennies. This business is not a get rich quick business if you plan to do it honestly