So, I've been reading a lot. I know what I want in an intercooler, and especially the design. I am looking for cores like they show in the book I've been reading. I saw one intercooler on ebay that was almost exactly what I wanted, but it was a ton of money. I know that with a tig welder, or even if I paid a shop, a good unit should not cost $850. I need new core(s) to build an intercooler from. This is what I want, more or less. Good end cap design, and the air if properly baffled, will travel through several short lines. Better cooling and less psi drop. and this is what you usually see: Mediocre end cap design, and all of your air travels through just a few lines. Lesser cooling, and higher psi drop.