Given the factory profile of the inner wing cut out it is either the edge of the plywood or the bump stops that limits upward travel. I’ll go with the bump stops thanks.
That's interesting, have they changed the profile of the cutout? It always used to be the diff hitting the rear hoop that limited travel, hence the rubber pad on the hoop. Prior to the introduction of the telescopic rear dampers It was the Armstrongs that did the control - at least on my 1986 car. The rear axle can't get anywhere near the inner wing panels.
Tim H. 1986 4/4 VVTi Sport, 2002 LR Defender, 2022 Mini Cooper SE