I was having problems finding an place to put my new Hi Lift Jack. I have regular cab Tacoma with a bench seat. Here is a good solution if you want to keep it out of the way instead of mounting it outside the vehicle or in the bed. The bracket I screwed the bolts into were already there in a stock Tacoma. Just buy the bolts and washers and screw them in.
The screw holes in the bracket behind the seat are Metric 6. I have the seat all the way back and it does not cause an issue with hitting the jack.