What did you do for chassis stiffening?

I went with USCT pieces. All but the mini-tub/spring relocation. I did the mini-tubs with a strip of metal and got the PST relocation boxes, which were like half the price. I also got the radiator support. Not sure how I feel about it. It’s a touch wide for the edge of my inners to seat how I want, and some other mods to get it plumb