So, I get my car running well, rebuilt head new plugs and wires etc. New tires, brakes, shocks, soon to be new lowering springs instead of the cut springs it has now.

now the bottom end is knocking at lower rpms. just a little. My oil pressure guage has been low for a while, but I was told that was a fauty guage or sender... well it seems like it may be correct.

I am thinking about buying a '95 e320 and swappiong my suspension, headliner and stereo... how much would a new oil pump and a bottom end rebuild cost?