L12 120w amplifier kit on eBay....anyone familiar with it?

2pcs L12-2 120W+120W power amplifier kit | eBay

The above link caught my attention a while back...mostly due to the fact I have a toroidal tansformer that will mate with it and enough PRP resistors and Black Gate caps along with other high end replacement parts i can tweak it with.

Just wondering if anyoneis familiar with it or could comment on the circuit shown in the ad....is this a quality design? Think its worth $35 to give it a try?

Thanks!