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It all works with dual live valve shocks. So it could be installed to increase wheel clearance at full compression. You can reprogram the speedometer to pretty much anything. Just need to know wheel circumference and convert that number to a hex code then update with forscan.
Think you might have that backward: RPG offer 'no lift' or +1" top hats while SDi are 1.75" of lift. Plus RPG seem to take eleventy weeks to ship parts. I have SDi in my truck and it netted about 1.5" over stock (with stock coils). Probably need to run top hats and longer coils for proper 38/39 clearance.
I don't. I mentioned RPG top hat for my truck as I have eibach springs front and rear and to "improve" a weak factory top hat. I also mentioned SDI in lieu of springs up front for the ride closer to stock but it would level up to run bigger tires.
Gotcha ... must have been semantics.
