I would check with T-bolt owners to be sure
Look in the T-bolt forum at Fairlane club of America site
If your not a Fairlane club member, join up man, or let me know & i'll post question over there for you
I guy posted pics of the mounting over at Fairlane club site ,under Watercooler.
Another guy said - go to the HAMB website, they have a section on Tbolts hosted by Tbolt owners, if anyone knows these measurements, they will.