I am British and left Blighty 3 years ago. I can totally see why the Mustang would attract people in the UK. However I cannot say when I was there that the market was saturated with 350Z's but maybe things have changed.
I agree the Mustang is a great looking car. When you refer to modding...
Hmmm.....this is interesting.
The ride is rough on the Z? Do you mean that the suspension is firm maybe even from stock? If I wanted a soft ride I would buy a luxury sedan. The interior is definitely not cramped infact being over 6 ft the Z was one of the only 2 seaters I fitted in...