I have a 2004 pontiac montana that appears to be dying. Will the engine and transmission from my 1999 montana bolt up and work? I know there may be some small differences however can they be blended into working? The motor and tranny from my 1999 have less that 5000 miles (GM crate motor and trans) on them (she totalled it right after they were replaced) I would like to just drop the K members and swap everything.