If you buy the box for a V8 it's very simple to fix for a V6. There's a small black plastic circle on the face of the box. You remove this plastic piece with a small screwdriver and you'll see 3 wire loops. Cut any single 1 of them and it's for a V6
I think the box for the V6 is higher than the box for the V8...I guess they charge you to cut that wire