Could be an old Edelbrock Performer too (what the Typhoon intake was based on)....but I'd think if it was, he'd quote it over the crappy low-end, knock off hunk of aluminum that is the Typhoon.
edelbrock does not have bolts running through the top. I have an old performer and you have to pull the plate off the plenum to access the mounting bolt on the inside. Its a typhoon. The seller was probably throwing the word gt40 around since its a more recognizeable term than typhoon
alright i think i have figured out and start to make my build plan.. i appreciate all the help. Now i have to figure what im going to do for a trans... aod or 5-6 speed.. any ideas or failures that you guys would like to share