Alfa Romeo tuning firm, Autodelta, has released details of its latest bespoke model, the Spider J6.Autodelta wanted to wring as much performance as possible out of the 3.2 V6 Spider, so a supercharger has been fitted, the chassis tweaked, and the transmission, suspension and braking have all been uprated. All of these changes mean that the Autodelta Spider J6 will hit 62mph in just 5.4sec and has a top speed of 162mph – significantly more sporting than the standard car's statistics of 7.0sec to 62mph and 149mph max speed. Then again, with the supercharger adding 88bhp to the Alfa Spider's 260bhp, you would expect it. The J6 denominator follows on from the equally unique Autodelta Brera J5 that went on sale a year ago, which has been in such demand that the company has been forced to rethink production methods. You wouldn't know it from a casual glance, but much of the exterior has been changed on the Spider J6. A new front bumper allows better airflow to the supercharged engine, whilst side skirts and a rear diffuser provide better aerodynamics and down force. A new stainless steel exhaust also adds to the effect.But one of the greatest advantages of Autodelta is its ability to create cars bespoke to the owner, so if you fancied some changes they'd probably be more than happy to accommodate. We reckon an Alfa Romeo 8C backup car should make it just about perfect.