custom car start button circuit

Ive read quite a few post regarding the push button start circuits and one post at the bottom of the page is pretty much what Im looking for but I decided to post because it got off topic and he had a few requirements I do not so here it goes. Im am looking for a relay arrangement using a momentary switch to go IGN OFF>press button>IGN ON>hold button>START ENGAGE and IGN STILL ON>release button>START OFF IGN STILL ON>press button>IGN OFF. More or less exactly how a normal ignition switch functions. Any security functions are of no concern to me because there are multiple ways to make sure that the car can not be turned on like using a simple car alarm starter kill wired into the +12v input to the relay arrangement. A company is selling a two relay arrangement but they want 130 dollars for a button and the relays. I cannot for the life of me figure out what relays they are using from the picture http://www.watsons-streetworks.com/wiring_accessories.html look at the "Ignitor" and thats what I wanna build. I cant imagine the relay setup could cost more than 30 bucks. Hope you guys can help