Ki61 can't reach it's operational altitude?

[Tyrannis]

This would intercept the B-29s just fine.

http://en.wikipedia.org/wiki/Ky%C5%ABsh%C5%AB_J7W

-looks for combat history-
-finds none-
-throws the plane out of being possable for AH-

[Squire]

Ki-61-I-Tei is the AH version. Its weight and specs will be slightly off data sheets of the Ki-61-I (of which there were a half dozen types) as a result of the 20mm nose cannons and slightly different nose from other Ki-61-1s. Rated alt @32,000 ft and you can get close to that in AH.

The Ki-61-II did not see any significant service in WW2. Almost all were prototypes, or variants of various prototypes, built in very small #s. The real "Ki-61-II" in many respects was the Ki-100 conversions. 

[iron650]

This would intercept the B-29s just fine.

http://en.wikipedia.org/wiki/Ky%C5%ABsh%C5%AB_J7W

Under status it said it was adbandoned as a prototype.

[Krusty]

The Ki-61-II did not see any significant service in WW2. Almost all were prototypes, or variants of various prototypes, built in very small #s. The real "Ki-61-II" in many respects was the Ki-100 conversions. 

Actually, while you're right most of the fuselages did go to Ki-100s, there were a number of -IIs in service, and not as prototypes. At least one unit I was reading about had -IIs, and was later found in homeland defense towards the end. I just read that the other day, would have to go digging to find where.

But I agree they were rare.

[Karnak]

Under status it said it was adbandoned as a prototype.

It wasn't abandoned.  The war ended, thus ending development.