Bolt down rockers on Twisted Wedge heads?

I contacted TrickFlow about switching over to bolt down rockers on my TW heads. I am just tired of the noise.

Their response was...
"No, It is not possible."
I replied asking the tech guy to elaborate, but haven't heard back yet (it has only been a day though).

Has anyone been able to do this?
I assume that one could HeliCoil the stud threads in the head to accept the smaller bolts.
Maybe some shimming would be needed under the rocker pedastals?
No doubt custom length pushrods would be needed too.

Can anyone help me out?
I would like to hear what others think before I start buying parts.

Thanks,
jason

I haven't spec'd out a cam yet so I can do anything with the rockers. I'll probably go 1.6 rockers, just cuz I can.

It seems do-able to me.

thanks