[duder13]

It depends on your goals. Do you want to feel like you have a real 1M (and convince others into thinking so,) or are you simply going for fun and performance?

If the former, I'd just buy a real 1M, because it's going to cost a fortune to do a conversion of a every little part, yet it won't hold any value and will feel like a lie.

If the latter, I'd buy a 135i and spend a fraction of the 1M's collector price modifying it to be a sleeper that potentially even runs circles around a 1M, depending on how much you want to spend.


edit: I just saw that the OP already has a 1M, so I'm not sure my answer makes sense now. What is the goal, frenzy757?