I blew the engine on my 2000 Contour last fall and now want to get it fixed before winter. I was looking at a site that sells ford engines and selected the year and model, and it came up with a BI-Fuel version of the same 2.0L Zetec. I was wondering what else would be needed if I swapped one of those in there...fuel pump, lines, etc. Does anyone else have this kind of engine? Thanks ahead for any useful information.