Thanks for bringing the thread up to top so I saw it. My Fiesta ST is only a RallyX car and is very much closer to stock than your guys. I'm just now tuning and adjusting a newly installed Cusco gravel spec suspension supplied by Yawsport. Have only a shake-down rain autoX and some light dirt testing on it. Currently working to redistribute jounce vs droop travel to get the bump stops a bit further away. I'd like to keep it at stock ride height for handling goodness, but may have to lift it a bit to be able to crash the rough stuff a little harder.
If you're interested, Brett at Yawsport has (maybe had) a Cusco limited slip for this car. I was planning on using it, but am not unhappy with the electronic vectoring stuff, so put it off for now. I know he thinks I'd be faster with it. But this car is already pretty competitive locally, so I can afford to develop slowly. BTW, anyone know where I can grab a second set of Team Dynamics Pro Rally wheels for this car? They seem to have disappeared from the US. I found some old Focus alloys in 15x6 that I guess will do for now for my mud tires. But they lack the extra high safety bead, so a debead risk. At least the price was right.
Only non-stock stuff so far is just tossing the base car suspension bits on it- rear beam and front knuckles. Had to grind off some of the Bilsteins struts to get them to clear the ST CV boots. May have to grind more. I haven't driven it for 2 or 3 years.
I don't think I need more power, although I keep eying the Pumaspeed final drive.
Did you email Paul Eddleston to ask about the wheels?
but am not unhappy with the electronic vectoring stuff,
if You bypass ABS pump by replumbing brake system the problem will go away.
well i had to do it because i wanted brake line to be inside of the car, same as fuel line.
can probably get away with simple unplugging one of the wheel sensors
as for LSD I bought the cheapest available from M-Factory. i think it was around $600
same as Quaife or any other torsen/helical diff, does job just fine and i don't have to worry about wearing clutch plates.
I got my car out of the garage for the first time in 3 years this past week. Yay.
It has a lot of problems I need to figure out. I think I either have brake fluid or coolant leaking. I can't tell entirely which fluid is leaking, but my brakes are horrible, and my coolant is low, so I'm going to start with those.
I can at least re-organize the garage a little bit with the car out of there.
Rally car prep is amusing for me in that I feel the best when the car looks the closest to "stock" in terms of not having crap scattered all over.