for those that were interested in the data comparing the spal to the permacool fans, here is the link http://www.soundkwest.com/mr2/temp/mr2tech/icfantests.xls the tests were performed on a 93 mr2 turbo using a puller fan on the inside of the ic. the spal fan was 7.5" (regular, not heavy duty) but i believe the permacool was 8". this data is not my own, but courtesy of ken blake. ted 93na->3sgte