enforcer
They are a favorite amongst installers, i think that one guy has a particular hatred for honeywell for whatever reason.
There has been no detail as to why he dont like it, for all we know it could be he doesnt like the grey colour of the panel.
as above the G2 232 module wont work on a classic, you need a 232 module for that panel, and then yes you could use gal gold.
Also you do need V4.xx+ for sms on the main panel, plus a new comms mod.
securitech were made in redditch. Later became c&k securitech. Made fire panels until the mid 90's id say in redditch uk.
Then got swallowed up c&k and production stopped, then bought by honeywell.
Unless someone has an old one then id suggest its bin time. But to be fair 4 zone basic conventional fire panels are less than