its nice to launch this kind of website but the condition is ,it should be freely to post vehicle's ad so after a period you will gain from your site.
I remember When Car Part .com got started.
Me and my brother had a similar deal and should of worked with them more.
I own a salvage yard for 10 years.
What needs to be done is one for the other stuff like tractor parts / boat parts / exc..
Get the idea, now you have the million dollar answer.
Might as well tell you about it, i can no longer do anything with it.
Good luck
OH by the way carpart it is based off the Hollander used parts numbering system.
So when you look up a part say for engine witch = 300-????? for interchange.
It will show even the notes, mile's exc. that the counter person is looking at.
It seems all set for launching your website about used automotive things. So, why are you waiting for I would like to tell you that you should instantly devlope your business website. You can easily sell automotive parts with this site as well as used parts too.