(First thing on google under "j bolt") In a smaller size than the hole obviously. Then if you had to, to fit it through the lower hole in the throttle body and out past the plenum - you could take a little off the bottom of the plenum (would want to avoid taking much if any off). Then just hook it up around though the back of the stock bolt hole in the plenum and apply a larger washer between the lock washer and the nut on the out side and it would "bolt up".
Am I making sence? And would this be possible with the right sized j bolt? Or is there simply no opening on the other side of the plenum throttle body flange bolt hole which you could hook the j bolt through? You'll have to excuse me as I have neither here in front of me as I am traveling and at a hotel now.