I'm looking at one of two options for the 4.3 in my 1983 toyota. The 470 Truck avenger which goes for just under $400, or GotPropane.com's 4- barrel propane only kit at around $1000. Thoughts? Do the propane kits work as well as they say? any downsides there? and what about the truck avengers? they're built for offroad, but i tend to dislike carburetors :flipoff2: I'm not afraid to spend a little more on something if i'm getting my moneys worth...Anybody running these on 4.3's? ....