Graham Arm on VPI TNT?

Can any fellow TNT owners advise on experience of matching a Graham arm on a TNT4 (arm board model).

Also what arm (wand) length would be needed or is best suited.

Graham arms and the VPI TNT are a time tested proven combination. Another arm I really like on the TNT is the Wheaton Tri-Planar dual pivot arm.
A Trans-Fi linear arm retired a Graham 1.5tc on my modified TNT. I correspond with an HRX owner who had similar impressive results replacing a VPI 12.7 on HRX. Feel free to PM if you would like that contact.