The uzz30 soarer comes in at 1530kg with 10 litres gas, and no spare.
It Has 191kw, so its weight (kg) to power (kw) ratio is:
8kg/per kw... also the soarer has 4.3kg/per NM of torque
The Auto turbo Silvia comes in at around 1250kg and is 161 kw so its weight (kg) to power (kw) ratio is:
7.7kg/per kw... also the silvia has 4.6kg/per NM of torque.
Which is faster then?
