Quote:
	
	
		| 
					Originally Posted by thstone  Money is still money and $20,000 for the small list of upgrades for the 987 seems hard to justify as does the $40,000 for the 981. They just aren't THAT much more car for the money as compared to your existing 986.  | 
	
 
True, but remember, the differences between a brand new 986S and 987S and 981S may not be all that great, but in this case there are other factors.
With the 987S I'd be getting 45hp and 30-ish lbs-ft torque (to slightly more than offset the extra 1xx pounds of weight). I'd also be buying a five-year reprieve from all the things that happen to a car because of age, regardless of mileage. And I'd be getting a 30,000 mile reprieve from the things that happen due to mileage, whenever that might happen (assuming I bought a 10,000 mile 2009 or 2010.) And for me that 30,000 miles translates to about 5years also.
And of course with the 981 those parameters become 9 years and 40,000 miles. 
Maybe not worth 20k and 40k dollars respectively, but still it's not as simple as just comparing the relative merits of each car when new.