Well I saw a post on Honda-Tech showing off the kit, figured they were being sold by now...but I can't navigate that site worth a damn
Weight...yeah, especially if you autocross...but man...This one guy dropped a Type R(B18C5 for the peanut gallery) into his like...94 Hatch or something...he spun out once and still got a good time, he was a great driver and one with his car.
Plus a turbo can be a bad thing in AutoX, so you've got the right setup...