So I reviewed all three pages of the conversion topic here. Seen some interesting thread. The thread asking this on page 3 had guys saying hell no don't do it, but it was from 2011. The thread asking this on page 1 was referring to doing it on a 7.3 and got a lot of positive feed back. Anyhow I have a 05 F250 that I blew the 6.0 in. I did some trading and buying and ended up with what I needed for a cummins swap. Then I got a 12v ve pump to put in it and ran out of time and money. Now I'm getting back around to the project. Now I am kinda on the fence about the cummins swap. I have considered going back to the 6.0( http://m.alibaba.com/product-free/109279981/03_07_6_0L_BLACK_MAMBA/productdetail.html ) or going to a 6.4. Obviously the 6.4 would be a better choice but what am I looking at needing? I can buy a complete 6.4, and I'm going to need the wiring harness, and what? Some guys said you even need the donor truck. Just looking for guidance here? Funny thing is I can get a performance 6.0 or 6.4 cheaper than a. 5.9 or 6.7.