How about a 24,250lb 4760cid V-18 with 12 turbochargers rated at 3500bhp and 10,326lb-ft of torque?


http://blog.roadandtrack.com/most-powerful-mini-ever/
Found the Metric specs :
capacity of 78 litres to develop 3,500 bhp and getting on for 14,000 Nm of torque (the original Mini made do with just 80!).