The platinum vapour injection is available from a site called gasforless. It is located in Edmonton Alberta, Canada. The Kit can be installed easily and I have found it worked on all my vehicles and have used it since my first purchase in 2000. My first Kit was installed on my camper and increased mileage from 10 mpg to 14 mpg traveling on level ground, a little less on hilly country. Further installs were on a Toronado, Olds Ferenza, and my 1998 Bonneville.
The secret on the Bonneville is to inject the platinum as close to the air valve (carburator) intake as possible.
P.*. The gasforless site is now under construction so give it a few day before looking.