Hi. I have a buddy here in town who is looking for the transmission crossmember for his 1969 Skylark convertible. The one for his car was totally missing, when he bought the convert. in pieces. He does not know, if the crossmember from other years of Skylark convertible will fit. Could someone provide info on which years he should be looking for. Is he correct that this is a convertible-only application? Thanks for any help, Gang. Best, John in Wisconsin