you can order it and drive it on the street... the FQ400 is nothing other than a factory tune version of the basic car with tons of drawbacks and extremly high maintenance cost and it is only sold in the UK.
The LeBlanc is a track toy like Radical, Airel, Mosler and of course the FQ400, the FQ400 with the turning radius of the moon and a turbo lag bigger than the ocean is worthless as daily driver.
The Caroline looks btw lightyears better than the FQ400
high power in small displacment engine is only a matter of turbo size and the will to accept extrem maintenance... we have here a VW Polo MkI in Germany with the old 1.8l 16V engine from the Golf Mk II conected to the drive train AWD system of the TT with the register intercooler based on Audis S1 Pikes Peak record car... this little monster puts down 1047hp and 950Nm of torque propelling this little Polo in 2.3s 0-100km/h and 6s 0-125mph(200km/h)
the famous foward wheelstander misshift at the 1/4mile in Hockenheim... still did a 9s run