hi mate all of them come as build up kit form but some people that sell them can also build them.

i have a guy that builds them for me latest version 3 for about 280 fully tested ,then ask about for base map or just start from scrach

i am running zetec turbo at the min,feels realy good/responsive
the only other thing i would ad is if u are going to map the car ure self get a wide band a/f/m to stop u from melting your engine

any questions just ask

tommy