Well, don't take it wrong, I own some imports for certain of my Sega systems, it's just that all my HuCards are US region.
The garage sale was more like some mystical place from a fairy tale. I didn't arrive at the sale until after 11 a.m., which is considered very late late as far as yard and garage sales go. The lady having it stated that both of her sons are now in college in another state so she was selling off their stuff to reclaim their former bedrooms while they're away. I'd really hate to be her when they come back for a visit.
I spent nearly my entire paycheck at that sale. 4 game systems (including the GT), 71 games for various systems, and a few miscellaneas items.
I'll probably sell the GT on Ebay since there doesn't seem to be a US to JP adapter. Plus, as previously stated, I don't have a JP HuCard to verify whether it's fully operational or not.