So what do you like, Prophet? Do you like imports or american? If you like imports, I would suggest getting a Suburu WRX or STI. If you like american, I would consider getting a LT1/LS1 Z28/Trans Am or a GT/Cobra. Suburu's are one of the only imports I like, and one of the few imports I have respect for.
Let me tell you, I drive a 2000 Z28 and stock, it runs mid-13's. That's STOCK! Here's a list of cars I think you should consider looking into...
'93-97 Z28/Trans Am...14 second car stock
'98-02 Z28/Trans Am...13 second car stock
'94-98 GT.............15 second car stock
'99-04 GT.............14 second car stock
'94-98 Cobra..........14 second car stock
'99-02 Cobra..........13 second car stock
Basically, we are all just trying to wake you up and make you realize that modding a Probe will get you nowhere fast. It will take some dough to get it into 13's and 14's, whereas the cars I mentioned runs those numbers stock.
I don't know what your budget is, but I looked up some cars for you on AutoTrader.
'95 LT1 Z28 M6 - $6,000 (80k miles)
'98 LS1 Z28 A4 - $7,900 (83k miles)
'96 LT1 Trans Am M6 - $6,800 (81k miles)
'98 LS1 Trans Am A4 - $8,970 (68k miles)
'94 5.0 GT A4 - $5,500 (73k miles)
'96 4.6 Cobra M5 - $8,795 (99k miles)
'00 4.6 GT M5 - $8,500
All of these cars are 13 and 14 second cars (cept for 94-98 GT; maybe 96-98 GT...94-95 GT's might be 14 second cars stock). All of these cars are also under 10 grand with good mileage. I couldn't find a 99-02 Cobra for under 10 grand. Why, and I dunno why, but Mustangs sell for higher prices than GM f-bodies.
I hope this helps you out and maybe can change your mind as well about your Probe. Best case scenario, buy an LT1/LS1 Z28/TA or a GT/Cobra and use your Probe as a beater. I mean, you only paid $800 for it. This is just some food for thought. Hope this helps!