
I notice one ebay seller is now selling Stag-4 4 cylinder sequential LPG mini kits ---- for under 200pounds including p&p. Add another £300
for a tank and the other gubbins and you have a sub 500 pounds LPG conversion on a medium eurobox doing average mileage car thats a 6month pay
back.
The reducer included in the kits is a Tomasetto Alaska which is ok up to about 120 bhp -- .
[Edited on 25/11/09 by britishtrident]
good. any links? 
ebay item 250531178852
He had one at £175+p&p earlier today.
Manufacturers site
http://www.ac.com.pl/products,16/1/