Air filter set up without battery

[Luigi172]

Hi guys, in the process of relocating the battery into the car- looking for some ideas of what to do with the airbox maybe using a v6/ph-1 box or another set up? Pics would be great

 

[Luigi172]

How have people secured there ECU flat? Also decided to run a v6 airbox straight off the throttle body- is there anything I should watch out for using this set up?