My take on the oiling system crossover tube for the small block

They are a retrofit hydraulic roller from hughes engines, might have been made by comp cams at the time, which looking at my invoice was back in 9/29/2006. most of the hughes part numbers on my invoice doesn't even come up on their site.

Fuckin 12 years ago, and here I am finally starting this engine up as of last month. Whether they forgot a plug, jacked up the main bearing clearances, or these lifters I have are just straight up junk, I don't think Hughes would be willing to help.

I guess I *COULD* maybe try those 'drop in' no mod necessary solid roller lifters from IMM, or the other guy who out of business, MRL? Think they are BAM is the name? I dunno.
There is a whole thread about guys having the same issue with low oil pressure using those bam lifters. They will give you the same problem. You want the comp cams lifters that are solid all the way down nod a high volume pump if you do not already have one.