The front weatherstrip and method of attachment to the windshield header are the issues that need attention. The rear hook and the side hooks are the same across all the Allante' years. Some of the very early hardtops (1987 and 1988) had hollow rubber seals that cannot satisfactorily be modified to fit the later year Allante's unless you don't care about water leakage. Always check the front weatherstrip to make sure it looks similar in construction to what is on the front of your convertible top across the header. The later seals have a "V" type cross section, whereas the early seals have two rounded hollow rubber sections with a metal plate hidden down between the sections.