Nope it will not. It has been proven time and time again that you cannot expect to recover investments into "soup up" a car. Not to mention for 50k go buy your own M Coupe, build the motor and turbo charge yourself.
You see some goofy stuff on eBay, I found another "M Coupe", but it had dual exhaust, not quad tips, and even the description said 2.8 liter, not to mention the fact that it was a salvage title, none the less the guy said it was rare and hard to find! I guess an M Coupe with a 2.8 and a slavage title would be rare and hard to find!