thinking about buildin a wall any help?

[SplChoice-]

this would be my first wall, it owuld be going in a 2005 ford focus roush hatchback
i will be putting 2 18's in it not decided on which yet but are they hard? and any things i need to know?

[Trixter]

lot of bracing....larger sheets of mdf flex more easily. double of ever triple front baffel. if you competiting with it, the largest port you can fit.

[iamamp3pimp]

your just gonna have to research