It had mutliple heads, I think I counted 7 in all, and was easily over 5 metres tall. Probably not the tallest cycad Ive seen (seen taller wild Cycas angulata in Arnhem Land), it was definitely the most massive! The base of the trunk would have been well over a metre in diameter!
It was in the front yard of an old house that looked to be completely abandoned so I assume it hasnt had any care for many years, in fact I was very tempted to jump the fence and pull out the climbing viny weed that was threatening to swallow it. I think its Cycas thouarsii, but the crowns were up so high I couldnt get a god look and there are a few cycas very closely related to thouarsii that can be hard to distinguish so Im not 100% certain, so it could have been circinalis or rumphii
I also took a picture of a Brachychiton rupestris, the Queensland bottle tree. Its not related to boabs at all but has the same bottle trunk and small crown, it was a lovely looking tree.
Yeah good luck with that Gary, dont wait by the mailbox 