You'll increase it's value BUT it's never a "true" twinturbo. I think it'd also be harder to sell a swapped car because someone will question the quality of work. The 2+2, vert, or hardtop would make a motor swap more desirable. Unless you are attached to the car, I wouldn't swap a 2+0. I came really close to buying a normal 2+0 with plans to swap, only because i knew the history and the original owner. That's almost priceless.
