i have heard of many guys with roush stage 3 trucks smoking out the trannies in months of owning it, i would get a built one ready, you will be needing it. a built trans is only around $2500 bucks with your core

http://www.levelten.com/Level_10_For...o1800-5000.htm

 

were would be a good place to get one im really a diesel guy but always had a soft spot for f150s i dont know what companys are trustworthy for this stuff

 

level ten is up there, heard alot of good things from them guys, they do both diesel and gas trannies. they sell just the kit so you can take yours in if you have a tranny guy

http://www.levelten.com/SearchResult...5&Redirected=Y

rebuild kit, valve body, and superpump

 

ill check them out and i do all my own stuff im a diesel tech and i've done quite few smaller trannies like these