I dont know if it was just rumours or reality ,but i heard from a friend of mine that B20A crank has 94mm stroke and Spoon use it as stroker kit for B18C1 to go 2.0 L (i think we all surely know that spoon parts mostly was Modified O.E.M Honda parts)
I know he's still guessing about what crank it'is . But he was very sure that it was O.E.M honda crank , because we can see that there's a lot of casting different from honda OEM crank compare with custom made crank such as 94mm jun ,95mm eagle-crower-scatt etc , this spoon stroker kit comes with Integra TYPE-R Rods and custom piston that the Pin hole was relocated upside.
There's a very visible minor machining works in this crank ,maybe for clearence use. And this crank also came with "Honda OEM Box Packaging".
You can see this 2.0L spoon stroker kit on spoon old catalog, maybe year 95-97

If you guys have any idea about what crank its ,please tell me ,because if it was a B20A crank .. i'll be very2 happy ,theres a lot of B20A shortblock here for under "Rp.1.500.000,-" or "$170" in your language, and the reability issues will be solved i think

 

b20a cranks suck (95mm, not 94mm). if you want a good 95mm, buy crower or eagle.