i like industrials turbo's!!
What are you gonna do with the truck? I towed 12,000 lbs wtih 3.54 and 285 tires, about 800 feet elevation. I had a 62/12. I would recommend the 12cm housing, if you go with the 14 you need to keep the rpm up while towing. The 12 struggled to keep things cool under 2000 rpm in 6th gear, it would be running right at 1200-1250 below 2000. 2000+ rpm it would cool down.
No one is running piers?
you can just pick your flavor on that deal... any of the major vendors will be able to provide you with a good S300 variant. They're pretty much all using the same hard parts