Ace23 said it the best "who cares what other people think" it's your money your car and the smile it would put on your face is all that matters
I'm building mine now and I stuffed a 5.4 gt500 motor in it And 3.6lc kenne bell to top it off. You can get that loopy idle also with L&M nsr cams I have them, I'm sure they make them for the coyote.
Joe