No doubt what I would do. I would do the 50's style leadslead custom grille, F & R frenched lights but find some cool ones for the back. Mono-tone single bright color without metallic.
All this is cheap stuff to do. Leave the drivetrain alone unless it is too slow for traffic today.
I've been buying/selling old cars for 40 years to supplement my income. So, I've driven tons of cool cars around while they are for sale. My little daily VW wagon in my Gallery gets tons more comments, stares, & pointing at than ANY other thing I have EVER driven. That includes tri-5 chevys, rods, classics, etc.