What size barrels and lips?

[e46cruiser]

Hey what's up guys, so I'm planning to build my gottis up to 18x10s sometime later this year. I want to run a huge lip like something around the 4-5" range. If that's the case would I need to buy a 4.5" barrel since the face is .5" ?

[righteousrags88]

It all depends if you sandwich mount them or not. If you do then you would have to fator in the .5 face