If you are inventive enough you can just use the 808 connector in the 510 box mod. I did just this with an 801 connector. I dont use 510's unless it is in my AVS so I just used an 801 connector that madvapes sells and replaced it with the 510.
I am going to be working on a box mod to incorporate the GG AVSv3 onto a box mod. Should prove interesting.