Jim, I agree with Steve, You've got this. you just need to go for it and don't look back. It seems to me the SBF are smaller than the Coyote engines and there may be more room to expand the DS FB to accommodate your feet, however, you should look up Straversi's thread because i think he installed a coyote and expanded the DS FB. I'm 5'11" with size 11 shoes and non expanded FFR footbox seems a bit tight to me but my DD is a Dodge 2500 RAM. Lastly, I too have no experience and have been intimidated with the thought of "body work", however, I am about to embark on it to a degree. Mainly because I enjoy working on this thing so much I can't keep my hands off it.

Mark