All I can offer is from 2/15/1982 SVO redbook;
SubSystem02.03 Engine Mounts - New, similar to 1982 Mustang restricted to 3.5 degree roll. Dual Engine dampers to control shake and reverse wheel hop.
E3ZU 6M046 AA Add, New 83 T bird W/mod valving Proto Samples by 4/23/82
Mark