another level question

[johnnyg123]

i know there has been a bunch of these threads but just trying to get the latest info . 2013 gmc sierra 2500 duramax. trailer 10,000 lbs several times a year. what is the best way to level this and what is the largest tire i can fit on stock 18 in wheels. i want to keep the ride the way it is. i hope to get down to the local shop this week and would like to have a little knowledge . i have a separate set of tires and wheels for the winter and plan on going back to the michelins for the rest of year but want to fill in the wheel wells a little.thanks

[RyanbabZ71]

do you have torsion bars up front?

[johnnyg123]

yes have the torsion bars.. on my last truck 2003 chevy 2500 cranked the torsion bars but also stiffened the ride. was thinking to go with a level kit in the front and a 1 inch block in the rear or no block and a set of airbags for when i tow. do i get the shock spacers for the front or just have them replace the shocks? thanks