How about a "true" RS package with some sort of hide-away headlights?
Or a true Posi rear end with at least 3:73 gears?
Or if you want to get real nostalgic, how about houndstooth interior?
And I know it's been brought up several times already, but definitely forced induction!
ARH 1-7/8" LT Headers w/HF Cats, Stainless Works 3" Retro-Chambered Cat Back, New Era OTR CAI, AAM 3.91 R&P, Eaton TrueTrac Posi,
JRE Billet Caps, LPW Diff Cover, BMR Drag Race Suspension Package (DRP007), BMR Toe Rods (TR004), BMR Xtreme Drag Bar (XSB004),
BMR Sway Bar End Links (ELK004), BMR Driveshaft Safety Loop (DSL014), Farks No-Hop UCA Bushings, Pfadt Solid Subframe Bushings,
QA1 DA Front Coilovers, Strange Engineering DA Rear Coilovers, Mike Norris Catch-Can, V-Max CNC PTB, Aeromotive Fuel Rails.