340 engine mount bracket

Post a want ad here, also make sure its NOT a truck mount. I believe it needs to be an a body car mount. 450hp MIGHT be at the point of where you may need to step up to a better "than stock" mount.
No idea why all the SB's dont share the same mount, like you said foolish.
Yup, may have lost some dollars if the ebay mounts are from a truck. Lots of ways this won't go right, lol. No real way to tell either, but I'm hopeful. If they are wrong, I may go with just trying to fabricate the mount from my old one like Mopar4me mentioned. I've seen where people chain down that side of the motor as well, in addition to the mount...isn't pretty but may be an option.