Disc Brakes question

Point is to use all factory parts. Aftermarket conversions are always a chore. Over the counter parts are always( at least to me) the best way to go. The factory knows more than anybody what the correct set-up is. Millions installed, parts everywhere if you wear out or break something. Return the kit...,

Oh BS. There are plenty of great aftermarket kits out there, many of which will outperform a lot of the factory parts.

And again, that’s not what the OP asked. Sure, personally I wouldn’t use a conversion kit that also required a spindle swap since you can use factory disk parts if you do a spindle swap. But that wasn’t the question and the OP has a different kit. So why not actually answer the question and help?