[mahout]

Its a good project. We had a customer and I wanted discs so we ordered Eurasian parts for one conversion of rear drums to discs and a kit from A&J Racing.
The EurAsian conversion is as involved as your project, reqquiring much accurate re-machining and ordering parts considerably smaller than the US Fit. We got 'er done but not recommended. It more costly too.
A&J's kit is very good. All parts fit easily and are beeffier;our only issue was welding brackets on the axle to hold the parking brake cables and hydraulic lines. Riveted ones would work too but being fanatics ...Freaking out Fit owners and salespeople is entertaing enough but the brakes are really valuable for pad replacement and racetrack use.
I suspect the cost of A&J's kit is probably about the same as your project; hope A&J gets a group buy)
Did you finish?