[Pushit2.0]

I would think it is ither a oil pump issue, or the bearing clearence is out of spec. I would have the crank checked out. Crank shaft supply, Wagamon Brothers (wags). King bearings would be a good idea along with a line hone with new mitsu main bolts. You might want to check your bearing specs with somthing other than plastic gauge, inside bore micrometer, and a normal micrometer work well.

~John