Someone selling an '89 intercooler on Craigslist claims they are different and flow more CFM than all others. First I've heard of it. Is it true or just plain BS?

Would this be Donnie Hardy of La Porte? Have a great day!

http://i1372.photobucket.com/albums/ag335/pcrist/1b61dec4-78ed-4f7b-9433-fe0bf0afe5b5_zpse8b74d49.jpghttp://i1372.photobucket.com/albums/ag335/pcrist/f68e9458-7519-4b3d-a8dc-ad818a979de3_zps44bbc452.jpgHad an extra can, so worked some copper and flex pipe to convert to 3", including new fender tap to factory location. On the car running good. Will have to dyno comparing to stock can set-up. Anyone done similar with HP gains?

Was originally chrome, painted black http://i.imgur.com/oEKHnLy.jpg $60 shipped.