Best power to weight ratio

[willdew]

I was at the Kit Car show at Donington at the weekend. The whole thing was a bit of a let down, but There was a Lotus 7 style car there that the owner had built from scratch (no "kit") with a 2 litre turbo cosworth engine in with anti-lag, water cooling and nitrus. The owner reconed it put out about 400bhp and weighed about 550kg.

That's almost 730 bhp/ton - in a home made machine.

What's the best power to weight ratio anyone else has come across in something road legal?

Will.

[domster]

The Dobson's Ultima is 1300bhp or something, in 1000kgs. It is a twin turbo Chevy engine.