Just can back from trying to unseize an Aston Martin dbs engine that's bin sitting for 30+ yrs, and what fun I had lol, I tried everything I could and it still wouldn't budge?

Soaked the bores with wd40 for a couple of weeks then, diesel for a week, then went round to attack it, tried rocking it in gear, tried rocking the crank with a bar, tried putting pressure on the bar while hitting the centre of pulley, crack lock down the bores, using a torch and cooking the bores up, I even jacked up the bar while on the crank then first hit it with a hammer then tried engaging the start while the bar was under load, but nothing

So I've left it now with the jack under the bar on the crank bolt putting pressure on the engine and all the bores left filled up with wd40

Any more ideas welcome as we know worse case is to strip down and rebuild it but was hoping it would turn over as it was only rebuilt a yr before it got left