72 C10 for my 25th wedding anniversary

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Update: the current engine in the truck sounds like it has a bad rod bearing, not Good timing! The engine lived a hard life under my right foot, so not completely unexpected, but I still had hoped to get 1 more year out of it. So now I will have to contemplate, do I order a new short block or try to put together the $ for a 6.2ls and 6 speed. If I decided to go with Ls swap I almost certainly would not have the truck back together for next July and the Street machine Nationals, (haven’t been in 2 years now, hate to miss again) or any other event, much less any cruises. Much to consider. Still plan on cutting the truck this winter going from long to short . I will try to post a video of the engine noise if I can.
Ok so not sure how to post video