has anyone tried the oil pressure sending unit that kragen sells? They look the exact same as the one that's on there right now, so I would imagine they should work. I'd rather buy it for $20 from my local kragen than buy it from MSA or BDA and wait a week to recieve it.

Buy it from Courtesy Nissan...it's pretty widely accepted that only the OEM unit is worth trusting. People don't seem to care for the MSA or VB units.

Not that the OEM one is super accurate, and it is about 50 bucks. It's up to you, but when I asked the same question about a year ago, I was pounced on and ordered to buy OEM, and I've had no problems.