Bagged Truck... Core Support Bracing?

[biohazardbill]

What are some things you guys have done to brace your core support on bagged trucks of this year?

I don't plan on running any inner fenders so wondering what some of you guys have done to stiffen up the core support.

[lowslow64]

I also plan on removing the fenderwells in mine and using the Porterbuilt hinges, but unsure of the system between the cab and frame/core support etc;