Hi, I have a Dana 44 with front discs and wanted to upgrade to Wilwood discs all around. The instructions say these fit 66-75 drum brake spindles. Is there a different kit that will fit my application or would I need to install a set of drum brake spindles?

For the front, you will need Stock drum hubs and spindles. The rear kits are even more specific. You will want to check your rear axle offset and other specs. If Wilwoods kit specs. do not match your specs, the rear kit will not work without modification or fabrication.