Chop Help for a Rookie

[Smokescreen]

Alright. I want to do a (possibly) simple chop on the new Camaro, by doing some re-proportioning and thus making a *new* Corvair. Do this I want to achieve the following design features:

1: make double front headlights
2: extend the trunk and slope it downwards
3: make the hood bulge disappear
4: make the rear have a grille and possibly with Ford GT-esque exhausts

Now I like the sharp edges and head/taillight design, so I'll try to keep those.

Any help would we pretty awesome.

EDIT: I'm using Gimp 2