About a year ago, there was a thread about a local shop building an E30 M3 with a V10 for a guy with an extensive BMW collection. The car is nearing completion and here is a lengthy pictorial of the fabrication work which has gone into the car. Needless to say, it's very impressive. Given that every suspension pickup has been changed and the car has new subframes, new track, etc, it may be fair to say it's an E30 M3 in body shape only. Outside of the shape, it's truly a custom car and not just a drivetrain swap:
