Thank you both for your input.
Australians are beginning to accept ethanol mix fuels here as an cheaper alternative to unleaded fuel .... but I have stayed away from it personally as I've heard good and bad regarding it.
LPG has been in Australia as a much cheaper fuel alternative for quite a while now and there is even a government subsidy on installations of $2000 to make it practically free to change ( the average "dual fuel" LPG installation costing about $2500 allowing either petrol or LPG to be used ) .
My installation is much more specialised with the intention of rusing only LPG as I have found duel fuel installation can be not good with either fuel or biased to one of them leaving the other inefficient.
the twin set-up will look much impressive
Gary T