That intercooler was built by Andrew McPhereson for Brent Holt of turbomustangs.com. Brent's car is a track only affair so it doesn't have any recirculatory pumps or plumbing. Its basically like every other intercooler used in drag racing now, you stuff ice in it, make a pass, drain water, repeat. Notice in the first pic the protective plate (with holes) to keep large ice chunks from falling into the core.

Andrew does some amazing work with a TIG.