I thought about that too - my brother has done the same thing with an 87 944S we had w/ a blown head gasket - I think the car is worth more as a package, to be honest. I put in 951 Cup suspension, coilovers, stiff springs, yadda yadda on it and I'd rather just see it all go to someone looking to DE that needs an inexpensive way to start. So far, the only inquiries I've had are people looking for street cars - they take one look at the specs and decide that its not what they want.
I could be wrong though - I'll have to look into what I might be able to get out of the motor, interior, suspension, etc a la carte - might be worth the hassle.