If you want the factory big bolt pattern 73-76 discs, you're spindles and upper control arms must be changed. Aftermarket may have conversions using your factory spindles.
The Conversion kits using stock parts are available. The kits run about 200-400 for the core parts. Sometimes you get very nice rotors sometimes not.
I occasionally get them and charge 300-350, depending on completeness, for everything plus shipping
