The ever-daunting options list is often a source of financial woe for new car buyers.

Spending around a tenth of the cars original value on extra bits and pieces doesn’t sound like a good idea most of the time, but what if you knew exactly what it’d look like before you spent anything?

Like a few other companies, Porsche has taken this idea and run with it, creating the Porsche Car Configurator, which lets you kit-out any Porsche model you like.

We had a look at it, and made our own 911 GT2 RS, but with a driveaway price of $687,945 before options, it’s a dangerous game.

Porsche 911 GT2 RS side profile

We’ve just started, and we’re already $62,390 poorer.

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Paint the wheels black, and you’re spending another $1390, though it looks good against our white GT2.

However, if you want the headlights in black LED, that’s free. Having the headlight sprayer painted the same colour as the car? That’s $490.

GT2 interior

After fitting out the interior in customised leather, Alcantara, and changing the stitching colour to silver to match the exterior, we’ve racked up a total options costing of $117,110.

We’ve added 17 per cent to the cost of an already very expensive car, to bring the price up to a quoted $798,055 driveway.

Thankfully it looks like Porsche have given us a $7K discount. Bargain!

Porsche 911 GT2 rear
Build your own Porsche 911 GT2 RS interior

Give it a try here, if you feel like upsetting your accountant.