Murph, I think a used 120r would be a very hard sell for that sort of money.
I know it's low km's and has a few good mod's, and likely cost you a lot more, but I would think you might get a few bites if it was closer to $5k.
Maybe advertise it and see where it goes.
Just my opinion, lets see what others have to say ?

Hi Murph, sorry to go off topic, but I'm curious as to where you got the Mahle pistons from & how much they cost you. I'm after some over size domed pistons to put in an engine I'm working on. - Rob

Thank Murph, exchange rate & freight costs from the US sure make you want to spew. - Rob

What a shame we are on the other side of the Tasman from each other. I'm after a higher comp where you're looking @ lowering yours. If you go with the procharger though, I'm thinking the pistons you will need will have to have dished tops, but I'm not sure on the compression requirements for the procharger. The SE flat tops will give aprox. 10.5:1 - Rob