Battery 🔋 box rivets?

Battery box 426 rivets look like a bit of a challenge. I was wondering if those who have managed to get them set could share a few tips please.
I have managed to get the countersink work done and I'm in a quandary as I can't get the rivet gun lined up.
Can backrivetting be used successfully here?

salto said:

Can backrivetting be used successfully here?

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Yes it can.
Just use the heaviest bucking bar you can position in that location.

OK thanks Scott appreciate the advice.