You aren't seeing the point.
People were giving him shit about his tune costing 1400. When all it cost his was $1400.
Your tune may cost only $600, but does the tune alone get you to 370kw on a stock car? No.
Hence my point.
When you do all those mods to get it to 370kw is it legal? And was it free ? No
And if you then wanted to compare Leigh's car to the current g35 skyline being released which is roughly the same price if not more good luck getting it to 370rwkw with just a $600 tune