Rear ballast ?

[onebadssv]

So I have a supra launch 22ssv. It comes factory with 250 bags in each rear hatch. I see people keep saying to upgrade to 750s but my question is about fitment? I have seen people say go with the fly high 750 but it's 20x20x50. The rear compartments are only about 40in long. Is there a shorter 750 I have not found or do you just not inflate it all the way etc... Thanks for any tips..

[moombadaze]

the bag will just completely fill the available space up, better than a smaller bag leaving room available