[greasemonkey]

Im a new member and would like some input from you guys/girls. Im considering buying a ffr 427 and would like to know why a superformance demands a higher resale price. Is it the donor aspect for the ffr being worth less in the end? Whats the opinion on the square vs round chassis main tubes? Does the superformance look better and generally have a better fit and finish than the ffr 427? Is the superformance a better kit therefore costs more or is it just that the ffr comes in a million pieces?
Thanks for any help.