There seem to be unwritten rules of modifying your car. For instance, you can't put a GM engine in a Ford shell, or run Cragars on an S13. Even mods that are commonplace, such as welded diffs and custom vinyls are often met with ridicule, followed by a fight in the comments section of the local car group. This is rather toxic behaviour and won't really get anyone anywhere, so why should it be acceptable?
If you remember the Monster Garage series and have read the accompanying books, you'll most likely remember Rule #1 of building a car: Nothing's Sacred. Do you think the hot rodders cared about brand loyalty when they put the new for '55 265 small block Chevrolet V8 in the engine bay of a cut up old Ford? Do you think AMG cared about quietness and comfort when they took one of Germany's stateliest family sedans, dropped a big V8 in it and called it The Hammer? Do you think Corbin Goodwin gave a damn about originality when he built his Rolls-Royce? No, and why should you care about what other people think when you're building your car?
When I bought my car for $550 Canadian, it was bone stock. Not even an aftermarket CD player, only factory cassette. Everything that's been done to the car was done in my garage, often breaking unspoken rules. Using GM springs on a full-size Ford car to slam it right the way down to the pavement? Sure, why not. Flashy Galaxy print hash marks? I don't see anything wrong with that. Riveted-on ducktail made out of sheet steel from Canadian Tire? Hey, it's functional. Not everyone will like it, but I do, and that's what matters.
The bottom line is that it's your car. and it's your money. Why do it the way the internet wants when you could do it your way? If you want to do it, and it's legal, do it. Whether it's a slammed 2WD Powerstroke, or an S-class built for rallycross, it's your vision. Other people may not like it, but that's okay. If they want one they like, they should build it themselves.