Pit box trailer isle width

[zeroracing]

I am building a new pit box for next season. I do not have a stacker type trailer, just a regular enclosed. I want to build the box so if I upgrade to a stacker or sell the box to a guy with a stacker. My questions are two. Most important what is the typical isle width of a stacker with infill, or what is the width of your guys pit boxes? Second, what is the hieght of the first floor in most stackers?

[grt74]

i would make it no more than 5 feet tall,30"deep,length ???maybe the length of a nitrogen bottle so it will fit under it,with those dimensions it should still fit in the basement and then you wont loose your money that you spent,just my idea of coarse