HELL YES!!!
If you have found a decent running 944 Turbo (AKA 951) for $4000 buy it! Because that is an awesome price. To compare I paid a little over $7000 for mine with 92,000 miles and I thought that was a good deal. Stock these turbos run around 10psi. But by just chipping it you can push it to around 15psi and still be pretty safe. After that though its time for a bigger turbo. There are many after market companies for these cars. Check out rennlist.com for info on these cars. And vitesseracing.com or Lindseyracing.com for parts.
Is it better then an eclipse?... depends, whats "better" to you? Its not cheaper thats for sure, but saying you have a Porsche is a lot different then saying you have a Mitsubishi. Performance wise its better then the Fwd eclipses but AWD GSX's are another story. Again it depends what you want. The 951 is NOT a good drag car from a stop because it has weak CV shafts that break from too many hard launches. Not a hard or expensive fix, but let it be known if you make it a habit of doing 5000RPM clutch drops you will be changing them often. They do love highway runs though and have no problem ripping through the triple digits... ask me how I know

And with their NEAR perfect 50/50 weight split they handle amazingly. Its a great track car. But anyways obviously im biased

I own and love these cars so of course Im pro 951.
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Lindsey Boost Enhancer, Blitz EBC, Hot Air Intake, Koni Yellows