Porsche is not a car company that makes changes on a whim.

So if there's been a replacement of a model, it's not just news, it's a milestone for the sports car maker and its fans.

	The 2005 Porsche 911 Carreria, powered by a 3.6-liter, 325 horsepower flat six-cylinder engine, starts at $69,300.

This year, thanks to the arrival of the all-new 2005 Boxster, Porsche's entry-level sports car -- and an all-new 911 series -- 2005 will be one for the record books for Porsche.

2005 is being billed as the first major makeover in the Boxer's 8-year history. But don't expect Porsche to do a complete new styling number on you. Styling changes on Porsche models are usually evolutionary and the new Boxster is no different.

In fact, it will take a pretty sharp-eyed observer to distinguish the new model from the older one.

On the new Boxster, you'll see larger front and side air intakes, new head and front lamp treatments that are different and more aggressive looking doorsills and larger side windows.

Although the engines are roughly the same size as before, 2.7-liter flat six in the Boxster and 3.2-liter flat six for the Boxster S, both will be much more powerful. The base model now puts out 240 horsepower, and the Boxster S goes from 258 to 280 horsepower. Zero to 60 times are 5.9 for the base model and 5.2 seconds for the S.

Handling is of course, the centerpiece of the Porsche story, and the company is making sure its new Boxster more than meets the mark. The handling system now includes variable ratio power steering, better body stiffness and improved chassis stiffness, a wider wheel alignment and larger wheels and tires.

The new Boxster prices are $43,000 for the Boxster and $53,000 for the Boxster S. Fuel mileage figures are not yet available.

But that's not all the news from Porsche by a long shot.

This has to be the first year I can remember in quite some time when Porsche has introduced two all-new models in the same year. Along with the Boxster, Porsche is unveiling an all-new 911 series. They look a lot like the current models, except they have round headlights just like the Porsches of old. That's been something that Porsche purists have wanted for a long time, feeling that the 911's front end looked too much like the Boxster.

This is also a historic time for Porsche because the 911 Carrera and 911 S are being introduced with a pair of engines except just one. The 911 Carrera is powered by a 3.6-liter, 325 horsepower flat six, while the 911 Carrera S will have a 355 horsepower, 3.8-liter six.

The S insignia, by the way, gets you some other nifty equipment. It will have the new Porsche Active Suspension Management technology, larger brakes with red-painted calipers, larger wheels, a standard Bi-Xenon headlight system, sports steering wheel, aluminum-look interior trim and a silver-colored rear deck lid logo.

This will also be the first year that the 911 Carrera will have standard 18-inch wheels, and the first time that 911s will have standard variable ratio steering, as well as the first time that a multifunction steering wheel will be optional on the 911 Carrera and standard on the 911 Carrera S.

Both cars have a wider track, that classic Porsche profile with more pronounced character lines along the flanks, completely reworked chassis and a a new six-speed manual transmission. Prices are $69,300 for the Carrera and $79,100 for the Carrera S.

Fuel mileage figures for the 2005 Porsche lineup were unavailable.