[5J's]

I'm a diesel fan but, I've got no experience with a gas engine since the late 90's. I've owned two Ford 7.3's currently own a Ford 6.0 and drive one for work. The work truck has been within a couple of hundred pounds of GVWR its whole life. I've had very few problems with either of the 6.0's but I really like that 7.3. At work we rid our entire fleet of the 6.4's due to the problems we were having. I've heard the 6.7's are supposed to be great. I'm not a Dodge fan but, the Cummins is probably the best engine on the market. Before I bought my 6.0 I was really looking for a Dmax/Allison combo. I didn't want to deal with the DEF but, also didn't like the earlier body style of the Chevy line. I think if I were in your shoes I'd try to off the 6.4 and look for a Dmax or a 6.7. If that's not an option I'd look for a third vehicle. This is just my opinion Good luck.