Porsche oil squirters

[effvee]

Good evening, question, is there any company out there that sells main bearings, that has been modded for oil squirters.

Second question, my main bearings look as if they were made of only aluminum. Greg Riddle modded the bearings, but I am now worried about quality. Any pics of the steel backed ones. Also, what would be considered as the top of the line for type IV main bearings.