Engine mounts help please

[[JP]]

Hi all,.... me again!
need some help again, mainly just someone to double check this for me, before I order this.
always need to make sure I'm right as if its wrong I cant return it from the UK back to the US.

anyway.... my 69 Buick GS 350 V8 engine is in a chevy C10 (

engine mounts are broken.... so I need new ones.
I'm not sure if the perches on the chevy have been made to accept the buick engine mounts, or if the perches as like this...... or if I have chevy engine mounts bolted to the Buick engine.

I crawled under the truck and found numbers in only one of the engine mounts, there's nothing on the other.
it says:

1382968 YELLOW
1383797 Black
10-5

I did a google search and came across this: http://www.buickfarm.net/index.php?o...=23&Itemid=117

or these ones here look like the same I think? http://www.ebay.com/itm/L-R-Engine-M...9T3o72&vxp=mtr

So.. am I correct in saying that what I need is the Buick engine mount? like the one on the link?
anyone came across anything like this? or could it be the engine mount is chevy as well as the perches and everything fit with a Buick 350 engine?

here's some photos as well and thanks in advance for any help.



as sitting in the truck:
left hand side mount, the one with the markings:




right hand side mount, no markings: