i wouldnt compare supra's to a WRX even tho ive seen a supra put down 1150rwhp with 2 turbonetics T66's and then barely be able to get back up to 1000 after puting a huge tubonetics T88. the wrx layout just looks like its asking for a twin turbo setup the way it sits but was probably not effective enough for subaru to spend the extra amount money to make it work.