Interesting decision. If you are putting this engine in a CSX chassis (original or continuation) there is no doubt that an FE would be the only logical choice - (in a BB car of course). I have had both an original side-oiler and a 460 stroker...if performance and an impressive BB appearance is your end-goal, go with the bigger motor. I know I am late to this discurssion but I'd suggest you reconsider your choice...
Tony