In that case - swapping to an SOHC probably wouldn't be worth the effort, with a new tranny and all. I would think that if you were to go to all that trouble, it would be easier to just swap to a 5.0. Don't let it discourage you though, if you want an SOHC, then I say GO FOR IT! I'm going to swap in a 4.9L inline 6 with an AOD and Dana 20 eventually. They say it can't be done, but I'll make it work, and you can too! lol... Seriously though, I'm not sure that the SOHC would be enough of an upgrade, and there aren't a lot of performance parts for it. But it's your truck, and you have every right to do whatever you want with it. :smoke: