Use whatever stripper you want or have handy. It won't damage the aluminum.
Stripper is used on planes because you can't really sand the paint off without making the aluminum thinner in the process. That's the only reason it's designated for use on aircraft. It'll also eat right through anything that isn't metal...such as weather stripping, door trim, etc.. That's why it might NOT be designated as Automotive paint stripper. For instance...with enough exposure, paint stripper could turn your plastic center caps into floppy pancakes of rubber or dissolve them completely.
Manufacturers don't want to be sued by dummies trying to remove overspray with stripper...only to realize they've just removed .05" of their bumper cover.
"Rules to follow":
Clean with dish soap
Rinse with hot water
Use the stripper (per the instructions)
Rinse with ammonia based cleaner in open air
Sand lightly but completely
Rince again with ammonia based cleaner
let air dry
Tack rag it
Paint it.
