Thanks very much for the guidance on battery support mount for a SBC FJ40. I'll look a bit closer on clearances.Not sure how readily you can modify the stock support to work? Most V8s use ALL the space inside the frame for the exhaust; the stock support requires several inches inside the frame rail.
The two popular placements both use alternative mounts. One is to remove the blower from the heater system and locate the battery nest to the firewall. The other brings the battery try closer to fender apron height, using the shock tower for support. @lcwizard used to offer one of the second type.
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