Which one I cant decide!!!

[92fordcummins]

Well Im rebuilding a 1992 F250. I already have a 12v in a 92 but this truck used to be my dad's and I got a hold of it. So I'm trying to fix it up for him we have must of the body work done and Im having a really hard time deciding which motor to put in it has to be electronic. I like the fact that the 5.9 is proven to hold what ever you throw at it but the 6.7 has is new and there are already people making big power with them. I think that the 6.7 has a bright future with the added displacement. I NEED opinions!!
Thanks

 

[JFlagg]

A 6.7 would definitely be cool. Especially if you built one using a non-emissions ECM. Though, the 5.9 will be alot easier/cheaper.