I need a spare key for my '07 mustang ace it has a chip in the key how would it be for a spare?

You will have to call Sanderson they will have the answer..

They can fix you a spare no problem

Battery prices for explorer sport tract V8

Ace hardware and any normal.key shop does those keys...probably cheaper ...I got a spare for my 150 was like 60$ quite awhile ago..but less $$$ and easier than having to call if you DON'T have spare...

Best way to go is by contacting your nearest ford dealer

Keys with a chip should be replaced with a like key..