Hi guys, I am in the process of installing an OME (springs and rear shocks) lift with KYB-GR2 front struts. I purchased quite a few OEM Nissan parts to switch over to my new struts, but I did not buy Part #54036 based on recommendations I received on this forum that it was likely unnecessary. However, when I removed it I saw that this rubber insert inside of it is broken (see below). My question is, is this rubber insert part# 54057? Also, the bellows I purchased (Part # 54050-0W002) have a bump stop (which appears to be so a later addition to the original part) so I am not clear as to what the purpose of this rubber piece is or if I need to even worry about it. Any help is appreciated. I am planning to make another order this week because due to rust, I need to purchase a lot of new hardware...ha.