After the end of the VAX programme the ILAAS remained in development as the nav-attack system for the VA(L), to be A-7. It was not included in the initial A-7 variants but Sperry continued to market it and prototypes were built. Ultimately, for the A-7D and E, LTV ran a competition that was won by IBM resulting in the Sperry ILAAS never being used on the A-7 despite it having been funded by the USN and having been in development for 3+ years.
Bits of the program history can be found in the following books: Memoirs of a Cold Warrior: The Struggle for Nuclear Parity by Lee Carpenter Moving Targets: Elliot Automation and the Dawn of the Computer Age in Britain, 1947-67 by Simon Lavington
In terms of specifics, the snippets I managed to find are: