@Unholy707 I just spoke to Josh about this last night because, the subject about cooling has a couple of threads going.
I too was looking at the HHP site to see what was available.
I didn't ask him which Vendor they use but, Josh said they install them on customers in-house builds. Basically they are a custom install for each Vehicle.
An ice box was installed in my 2010 Challenger build for a 440 Al engine with a Kenne Bell 3.6 and then 4.2. Crowning the Top! Keeping everything cool.
So with that knowledge and long before any of the iceboxes that are available today, my Husband bought the ice tank for his "Top Cat" Challenger from
https://www.rhodesracecars.com/ He then sent it to HHP for installation.
https://www.rhodesracecars.com/search.asp?keyword=water+tanks
HHP does custom installs of race ice/water boxes on their in-house builds.
Linda