Lower Engine Mount Bolt for Accessories

[pmacddd]

Picked up a set of used engine guards for my '78 GL1000. Great deal. Now when installing them, I distinctly remember something I read way back regarding a longer engine mount being required. So now I'm trying to figure out where I can source just such a bolt. Mine is about 280mm long, but too short. I could use all-thread, but only as a last resort. I'd prefer a real bolt. Any suggestions? Seems all of the good salvage yards closed in So. Cal, so I've had to source parts elsewhere, but it's always good to know what you are asking for.

[froche]

How about brand new 10.9 black 10mm X 300 11.69 coarse (x 1.5)
https://www.belmetric.com/10x15-coarse- ... 14350.html
or
https://www.belmetric.com/109-coarse-th ... -3020.html
1 meter metric threaded rod 10.9 10 mm
or https://www.boltdepot.com/Threaded_rod_ ... 1.5mm.aspx

[kndw]

I also used all-thread... no other option as far as I know