if you wanna keep the stock ifs style front end then i would say use cognitio i like their kits and its easy set up, imo, but if you want to go solid axle i would say Off Road Unlimited for their solid axle swap, its a bit pricey though
Cognito is great. Can't go wrong with them. Also, get the tie rods and steering beef up kit while your at it, it will make the truck feel more stable and it will make the front suspension stronger.