The stock truck pump is the same unit as the the early Starion pump. I have the stock truck pump in my turbo motor and use the passage in the block.

The use the same size gears and in theory have the same output. The block pickup is a little restrictive. I have run it un modified without problems. On my current setup I drilled the block out and rounded the sharp internal corner thats mid block.

Where in Portland are you? I'm in NE on 22nd not too far from Killingsworth.

Kevin

87 Turbo Intercooled Raider, roller cam, torsen rear diff, LSD front diff, lockup auto with modified converter, V6 brakes, low transfer case gears...