I have a 72’ Dart with a big motor, and still having cooling issues on a hot day. One of a couple changes I’m looking at is to upgrade my mech fan, but the challenge is due to the motor I don’t have a lot of room between the rad and the water pump pulley. Im currently running an 18” 6-blade flex a lite aluminum silver race fan because it’s so thin, and it works alright. what I’d like to bump up to is a 19” 7-blade fan, but can’t seem to find one, let alone one that is the same thickness as what I currently have. any suggestions on mfg or fans to check out, I'm all ears. Thanks in advance for any suggestions.