G'day

I'm in the process of building myself a work ute (thanks WALKER ) . I'm going to put it on straight gas.

I'm just wondering what the deal is with the certification. Is it correct that if the car all ready has gas on it, then i dont need to get it looked at again, is it true that if the tank is out of date, then i need to get it tested?

I'm trying to decide wether it is going to be better to take it somewhere and get them to do the whole lot, or if i should build it up out of second hand parts.

Cheers