Damn that sucks, what brand are they? The only ones I have purchased and installed were from wildrides and they were pretty stout.
https://wildridesracecars.com/shop/ford/79-04-mustang-battle-box-combo-package/
I've meaning to do this to my latest car but honestly got too lazy and am too far out from putting any drag radials on the car anytime soon
They are LMR's house brand that come in bare metal. Have an SMR sticker in them, but I dont know what that stands for. I dont plan on drag radials, but I have the axle out of the car, so why not. I have a 347 in the car, so who knows what the future may hold for it.