I just came back from a trip to Japan, where I visited a new manufacturer of high-grade 1/32 kits.
These guys (called "Zoukei-Moura" - catchy, huh?) have already released a 1/32 Shinden, and are just about to release a 1/32 Ta152H.
If you are interested, you can check this link:
The site isn't that easy to follow, but I know that you can pre-order the kit from them. I can probably help with liaison with them, if necessary.