Sbp to bbp

Call or email Cass at Doctor Diff. He can talk you through it all. I can say that I looked at doing the BBP conversion, and switch to discs at the same time. He was able to tell me everything I needed. I can't say for sure on yours, but on mine, I needed to switch to the bigger lower ball joint (he could provide) and he had adapters for my small upper balljoints to fit into the new spindles.

Bottom line, he can provide everything you will need and I'm thinking you will be well under your $1000-$1500 budget you mentioned.