The only custom kernel for the Evo V 4g is the AnthraX Kernel for sense 3.6.
Directory listing for www.androidfilehost.com/main/EVO_3D_Developers/.chad.goodman/KERNELS/
(The Kernels were taken off the server, ill have to put up a link on dropbox)
Edit: Dropbox Link:
https://www.dropbox.com/s/w4mls5rrige1d7e/AnthraX-htcleak-rls1.zip
The only thing the kernel breaks is the 3D camera and the 3D. If you view a 3D picture, its gonna mess up your screen until you reboot. If you switch the camera into 3D mode, you'll get a black screen, but you can switch back to 2D camera mode and you'll be fine.
You can overclock to 1.566 GHz, but 1.536 GHz is the max I can get it stable. It supports undervolting, and a bunch of other stuff I'm forgetting.
Here is the kernel's forum:
InfectedROM Android Community Forums
If you don't care about the 3d, flash JMZ's tweaked rom and flash this kernel over it, I get about 3,500 in quadrant benchmarks.