wouldn't at all call it practical, but most just for the fun of it awesome builds are not.
if i had the room and tools for a big project (and when my money tree starts blooming), I would be looking for a wrecked terminator and a LS with a blown motor. sure I could buy CTS-V but it would be way cooler to have a one of a kind blue oval version. its kinda why no LS will ever be as great as the "Baddest LS" at that point, its not a DD, so I'm not worried about what doesn't work