Here is my 78'. I know it's not everyone style. If Chevy made a 78' SS, I think it would be similar to this. Started life as a Landau, as evident by the side moulding.
Exterior: Removed 1/2 vinyl top, painted original black, added SS stripes, added 15' Rally wheels
Interior: Complete 86" Monte SS interior including wiring harness and dash. Only 1/4 glass trim re-used but painted to match.
Rear: 8.5", 3:73 gears, added a Eaton Limited slip, donated from a 85' 442.
Motor: 71' 350 block, .030 over, 10.2:1 flat top pistons, 65' corvette "fulie" heads, 64cc, ported and polished and studded, comp cams XE268 grind, roller 1.52 rockers, Edelbrock R.P.M air gap manifold, Edelbrock 650 AVS2 carb., Pypes exhaust.
Trans: Tremec TKO 600
Suspension and steering: Rear shock tower brace, upper and lower rear control arms boxed, Full F41 sway bars and steering box, Rear upper control arm to frame braces, front frame rail interconnect brace, SS springs all around.