I recently received the Orochi M3A3 for a build review from Jim here at Armorama. You can read the build review here for the basic build and issues w/the Orochi M3A3 kit.
I decided I would use this one for my M7A3 BFIST. Again, I scratch-built the new targeting box. And of course, again, I forgot to take any pics of it before I painted it. I also changed the rear light guards to be taller to accommodate the two addition antennas for the two additional radios to talk to the FA BN. There are four radios total on a BFIST. That was all it needed for the conversion. With the exception of the CIPs, which came from the spares box, the rest is all Orochi.
This is the basic vehicle I was looking to achieve.

Here is the result.





More here.
Let me know what you think.