What car for turning up the boost to silly amounts?

[GravelBen]

v8will said:

I'll nominate the trusty MX-5, many have been turbo'd using good quality bolt on kits and have gone from zero boost/ 116BHP to plenty of boost/ over 200BHP

While they won't compete with the bigger engines for outright power potential, proportionally they do well - from 116bhp at standard to around 270bhp being commonly considered the limit of the standard rods. Start swapping internals as well and mostly a matter of how deep your pockets are.