Hi all, I'm looking at a new Globecar Campscout B 3.5t. it comes with a Fiat 2.3l mjet 120 Bhp engine as standard. I will be going for the new 9 speed automatic gearbox and won't be towing anything if that makes a difference. Upgrade options are 140 Bhp @£990, 160Bhp@£1990, 180Bhp@£3975. Which would you go for?. Also chassis upgrade 3.5t light to 3.5t Maxi cost £400, whats the benefit of the upgrade. Thank's.