The Chevrolet Astro/GMC Safari was a medium sized van that used light truck power trains in a unibody van chassis. Its rear drive setup separated it from the front-drive mini-vans, but the size (and mass) of the Astro/Safari was closer to the minivans, which makes them the perfect car for a righteous engine swap. Find this 1995 Chevrolet Astro Van with 454 V8 here on eBay, currently bidding for $3,500 reserve-not-met with 1 day to go. Tip from Adam.
This Astro Van really hits all the high points for a great sleeper; Totally inconspicuous exterior, stock looking, (no obnoxious hood scoops) and a humongous V8 under the hood.
Power comes from a 454 cubic inch Chevy V8 that has been massaged for even more power according to the seller. Horsepower figures are hard to guess from the sellers description of parts, but something in the 400 hp range would not be unreasonable to expect.
See another way to haul your family around and never be late again? firstname.lastname@example.org