I picked one up for $50 at a self pull yard. I'm not sure exactly about the models, but they did make a 2.3 single cam motor. So the difference will be there. If you want to turbo a car, use the stock mustang 4 plug heads. They have better power potential, and the cams alone to do a good 2.3t Folvo are over $600 if I remember correctly, the piston set is also another $600. Other than cool factor (which is high) the Folvo isn't any better, and it actually has less power potential.
1991 Mustang LX 2.3L 5 Speed convert
1989 Ranger 4X4 2.5L 5 Speed solid Dana 30 front axle, 4.5" suspension lift, 3" body. ( blown up....)
Entire turbo kit waiting to be used again.