posted 07-12-2002 06:50 AM ET (US)
All the 27 full transom models are reinforced. That said, even the standard outboard well transom is able to handle jack plates with out any modifications can use then with as much as a 12" offset.
Armstrongs are promoted for replacing I/O installions and they request that only qualitied dealers do the installation to make sure the brackets are properly positions and the transom is inforced enough to handle it. Most I/O transoms were not reinforced to accept brackets thus the requirement.
As Dick mentioned the Armstrong on the 27 in question probably had Sea Drives with Gill brackets. Whalerdrives were introduced either in late '87 or '88.