I'd assume it would equate to a .8" drop in travel at the tire....but let's keep in mind that the new Bilstein is only advertised at 5.1" vs 5" for the Eibach. The Pro-Comp is non-existent anymore. So its really not a contender. The New ProComp...not even sure what they were aiming for. Maybe a universal shock for more than Gen1 Tundras.Good stuff.
The slight lack of travel compared to the procomps is kind of a bummer. I don't know what .4" of shock travel equates to at the wheel, but would be interesting to know.
I 'think' as long as its over 5" then you 'should' have 10" travel at the tire...but I haven't put mine together to test fit yet. I'll have to try to simulate it when I start doing the test fit on mine. I'm thinking they may be my next step if the bilsteins are too annoying. I do intend to email them and ask what the dia of the steel at the bottom is. The Bilsteins hit our A-Arms. Curious if the Eibach's are smaller and give more clearance like the Pro-Comps.