Radial Tire Clearance 35 pickup

[Jakno]

We are installing four new 225/75R16 radial tires on 35 pickup. Rears fit fine, plenty of clearance. The front tire/fender clearance, not so good. Have approx. 3/8" of clearance to front lip of fender which causes tire to rub when turning.
I have been planning on converting the front shocks to the tube type which I'm hoping will give me some front end lift ?.
Has anyone experienced this problem with a successful solution they would share ?. Thanks