'94+ Grille Conversion

Hello Everyone,

I have the old style GMC see grille, as shown in the link below (that's my truck).
http://www.gobrien.net/images/cars/mycars/sierra/After/IMG_0024a.JPG

I'd like to convert over to the '94 style GMC grille and grille shell. I plan on getting the parts from a wrecking yard and making the swap that way, but I have a few questions.

1) Is such a conversion possible?
2) What parts do I need? I know I need the grille and the grille shell.
3) Will my old headlights and park lights fit?
4) The new grille puts the park lights a couple inches higher up. Where will the park lights bolt on for my truck with the new grille then? Do the lights attach to the grille itself?

Thanks to anyone who can help me out.