need help reinstalling battery box

[shifty]

long story short -

i removed my battery box because of rust. i took off my front clip to work on my LS1 install. while the front clip was off, it fell over but no real damage was done, thankfully. it might have tweaked a tad because when i put the front clip back into place (not bolted in), i went to install the new battery box (NOS) but the hole where it bolts to the inner fender WILL NOT line up for anything! i cannot get that damn thing to fit. but i didn't take off the core support, inner fenders or anything so i don't know why this isn't bolting right up!

can some of the pros around here tell me what to do?

i wanted to bolt it up while the front clip was still not yet mounted to the cab. once the battery box was in, i was gonna start getting the front end bolted on and put back together.

THANKS!