Re: 855 Cummins duel fuel line mod?
You can buy the kit from pittsburg power, about $85 I believe. The dual fuel line feeds fuel to the back cylinder head, and the front cylinder giving better distribution of fuel. Nobody is sucking hind teat that way.
Basically a tee, some hardline, elbow, and a couple of other fittings.
The fuel compressor was probably a FASS system. Supposed to remove entrained air out of the fuel causing some hp loss.