Ford actually make an inline 6 still here in Australia.
4.0L
Variable valve timing and Twin Cam in the recent upgrade
Good for about 182 kW (approx 240hp)
(Have a look at
www.ford.com.au if u r interested.)
Used in the new Falcon here (the block is about a 40 year old design though!!)
there's also a turbo version with 240kW (320hp) available.