Is it possible to have crouch stealth running as fast as standing up?

Implant M-5, adds 20% crouch speed

Tunnel Runner perk adds 25% crouch speed

Certain armor, without spoiling adds 20% crouch speed

Travel Light adds 10% speed

I dont think so...
Even if you found a way to get it to 100%, I think that 'speed' might be a selfcontained thing (like for crouching it is seperate to running).
But that's just at a guess! Just cant imagine it.

I'm pretty sure with the Implant and the Tunnel Runner perk you sneak faster than running.