The best “bang for your buck” would be going with the 73+ style disk kits that use factory replacement parts.
@DoctorDiff is the place to go. Yes, you can probably find a cheaper version of the 73+ kit elsewhere, but you will also get cheaper parts-bearings, lines, pads, etc. DoctorDiff’s kits use quality parts that will be better in the long run. You can use either 10.95” or 11.75” disks with the 73+ kits. If you use 15” rims the 11.75’s will fit and provide a nice upgrade in stopping power
As for the Wilwoods, keep a few things in mind
- they have less clamp force at the caliper than the 73+ Mopar calipers do
- the hub diameter is over 3”, which means they will not work with factory BBP wheels. Aftermarket wheels only. And check, because not all aftermarket wheels will fit them either
- they use a 2 piece aluminum hub that must be safety wired together. It’s an extra step, and if you’ve never safety wired anything before it does take some practice to do it correctly
- parts can be ordered, but won’t likely be stocked by most local parts shops. This is less of an issue now than it used to be, as the 73+ stuff isn’t always on shelves all the time like it used to be.