Putting the car on a diet

-Trunk mount battery

Redistributing the weight is good. No weight loss, weight gain with extra long cables.

-Carbon fiber/ composite hood with aluminum frame glued, still hinged, lighter hood hinge springs


-aluminum k frame

A tube K yes.

-tubular A arms

Yes

-lightweight discs

Disc brakes? As in light weight disc brakes?

-aluminum header/ grille support

That seems like a lot of work for a minimal gain

-aftermarket heater

Like a electric heater? Leave the stock one in there.

-aluminum bumper bracke

Yes

-fiberglass or aluminum bumper

Fiberglass

Any personal exp. or info would be appreciated. I'm going with a 6 cyl.

Thought about ditching undercoat, but I don't know if the gain would be that significant. This is going to be a full interior car

Leave the undercoating. Major pain to remove. You'll just end up with a car that rusts quickly.
The under carpet sound deadener (sp?) is heavy.

Fiberglass hood, fenders, doors maybe possible for year/model, trunck lid, rear bumper as well as front bumper, aluminum wheels with skinny tires, Dakota rear disc brakes, lighter driveshaft, dump the jack and spare???? LOL
Lexan glass replacement.