Well I have found a scaleless custom knife made by Scott Gossman that is a bit shorter overall than you are looking for but it is a very good kit knife.
![](http://img50.imageshack.us/img50/2900/pskspoon3251vs2.jpg)
Scott calls this his PSK knife and it is about 6" overall in 1/8" O-1 steel. It is also only $45 without sheath. He has done a very good job of this and I am building a neck kit around it using a custom made sheath.