I need strut insulators for my late year 260z. Seems the proper item is very hard to find. Curtesy Nissan has a super imposed number for the original part that references to the same part as the 240z. This is about 3/4 of an inch lower then the original.Has anybody used this lower strut insulator on their late 260z or 280z. Did it make the rear droop. Is it very noticeable. How was the ride. Thanks ZDude1967