Alot of thaught and planning has to be done before a sound estimate can be given.Tire size,round tube or square tube back half,stretch the qrts or not,mild steel or moly,behind or in front of the dash with the cage,full interior or gutted,4link or ladder bar.All of this stuff plus much more makes a large diffrence in cost.In my experience people always change their mind midway through and the cost tends to double.So plan plan ahead!!!!!