LP Gas conversion locations in Melbourne?

[rawnrg]

Hey all,
Got a vp wags here that's going to be put on gas. I've been through it all before when we converted dad's vs to gas, but i'm just chasing a place that'll do a basic conversion for around the 2k mark, or next to nothing when you include the rebate.
Had a bit of a search but couldn't find any places reccomended on here.
Reason for this i know all the local places i've visited charge around $2650, or $650 after rebate, but i just want a cheap as chips setup because it's just a daily. Also, how much should i be looking at extra to get a donut tank in the floor. I've been quoted from $400-800 extra, is that the going rate as it seems a bit high?
I'm in northern suburbs, but am willing to travel.
Cheers all.

[electro cruiser]

not sure mate. the price of the actual conversion has gone up since the rebate because more people are going to lpg and the converters hav put their prices up a bit to make more money. thats what i got told anyways. i could be wrong