Thank you for getting back with me. Appreciate another opinion. Gonna try the drivers side next!I wouldn't have any problem using even a Grade 5 bolt, certainly no reason I'm aware of that it needs to be OEM. I would opt for a fine thread and maybe consider antisieze on the bolt shank and blue loctite on the nut.
As for the air bag, if there was no fault with the bag, personally I would certainly prefer it over spring coil overs.
Sorry to hear that. Wish they would have applied a little anti seize at the factory! thanks for your help!You got luckier than I did, even the air hammer wouldn't free my bolt. It looks like I have to use the sawsall and replace the lower control arm.