Hello ridingsails
This is the yacht you mention in your post - a Tasman 26 as you say.
www.gumtree.com.au/s-ad/rainbow-beach/sail-boats/28-ft-adams-yatch-on-slip-trailer/1281923224Glory, where to start. There is no mention of mast and standing rigging in the post but photo 2 includes a white pole on the ground which is presumably a mast. So if that is the case possibly a boom is included also. No mention of standing rigging (age?) or sails - a mainsail and no3 jib can be bought for not much - main as is or cut down off an E22, jib same off E22 but it will be short hoist. Numerous 2nd hand sail merchants on the web. If the diesel and whole drive train is easily serviceable then that's a bonus - the drive train including everything all the way through to the prop including coupling, hull stern gland, p bracket and its bearing etc.
But it might be what you are after.
As regards the above posts (sage comments by BBender and Cabron obviously) , imho;
1 I (and Ramona) have mentioned the Supersonic in numerous prior despatches - not sure why it has not sold - I have no knowledge of this specific yacht other than the advert. I know the S27 well - a mate had one - I inspected one for another mate. Realise you are in Qld.
2 The Adams 8 is a superb harbour daysailer racer as long as sailed with an experienced crew........the best Adams 8 was Popeye out of MHYC in the early 80s.......but it is very tippy and certainly not an offshore boat.