2.6 is old news by now I'd think. If you can afford it, the 2.6H or 2.8H are great units. That being said, are you planning on going built, or just run it on a stock bottom end? Either of those bigger units are MORE than capable of evacuating the factory rods in a hurry.
I have a 2002 F150 Harley Davidson, I'm running the old Kenne Bell 2.3 with JLP sheetmetal upper intake. I'm sitting at about 16 psi on the stock bottom end. It's tuned well, and has been running in this configuration for 5 years without any incident. I am keenly aware, though, that one of these days, if it's cool out and/or the stars align just right, one of those rods is going to let go.
If you plan on just having a fun daily driver, I'd look at the smaller units like the 2.3l's(KB or Whipple, both great pieces), but there's also Magnum Powers, or any variety of ported Eatons. I wouldn't waste the time on them, though.
Any questions, let me know.
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