Upgrading Suspension

Forum: 

Hi

Looking for some assistance with upgrading suspension.

Currently have a Fourtrak which is used for work, the car is used to tow approx 2-3 tonnes and I need to upgrade the suspension front and back to cope with the weight.

Can anyone offer any guidance on the type of suspension suitable for this and also where I might be able to get it, any dealers shops you can recommend.

Many Thanks