I think the Buick wagon would look cool with the right mods. As you said, the front bumper will entail some ingenuity and creativity. Not for nothing but, the Buick Century front ends were not the prettiest, so whatever you do will be a vast improvement.
When you get a chance, check out Jim's (Liquidh8)'s build. He put a bunch of work into his bumpers. They look awesome.
I've seen your work in the past(and present), so I know you're more than capable and up to the task.
