[A/S] chocks

[asdf1009@xxxxxxx]

I'm thinking of ordering some of those fancy, padlockable chocks for my 66 
overlander. However, I'm currently 2 hours away from my trailer. Does anyone 
know off the top of their head what the spacing would be between the tandem 
wheels? The sizing ranges between 1 7/8 and 6/12 inches....I'm guessing that 
the 2 1/4"-4" size would work, but won't order till I have a chance to 
measure, or hear from you folks.

Thanks - 
John