I recently acquired this lovely '64 SG Junior from Craig's List. It's in great shape, all original EXCEPT the original bridge is missing, and the only mod is that it's been drilled for a Tune-O-Matic (also missing). Which version of the Tune-O-Matic should I purchase? The Tone Pros seem like the most functional solution that still keeps the vintage vibe, but I'm confused as to which one/which size to get? Also, the Gotoh bridges in the StewMac catalog there are different sizes of threads? Is there any way to tell exactly or to make an educated guess which of the above options will work the best? Are there better options for a bridge for this guitar? Thx in advance for any info you can provide!