I think we are talking two different issues here.
Are these street driven vehicles?
Chrysler has always recommended tubing the block as the low cost way to run a roller lifter and have proper oil pressure.
Bushing the block is expensive. Many drag only cars run fine with good oil pressure with only tubing the block. But the lifters are completely run dry and rely on splash oiling only.
Many makes of higher end lifters aimed at the racer are now using a pressure fed system to get better lubrication to the axle and needle bear/bushing. That's why I posted a lengthy post of how I did my block to get hopefully decent oil pressure and a pressure fed lifter wheel. You can run that 828 lifter without bushing or tubing the block
And get decent oil pressure. But the durability of the lifters may not be very good. Two very distinct issues. And if you ever fail an axle wheel assembly, you will be tearing down your motor at a minimum just to fish all those needle bears out of the oil pan.
