2.5". Whatever that translates into, someone else can do the math. *shrug*

$40 is a lil heavy for a 'small' vehicle like that, imo.

The Firebat looks kinda neat too. Seriously, check out the link and see what H has up their sleeves. And will it answer the question of WHY Wave4 isn't out yet? Not really, but apparently the crews who did the small joes for the last few years are doing these too.