[68LSS1]

Catch cans basically do just that. Catch the overflow and they usually have a means to drain like a petcock. You need a recirculating type can. There is not much difference between them all. Basically your system even though it has a cap and is closed is called a open system. The true closed system is used on all most all newer vehicles starting in about (guessing here) mid to late '90's. These systems have the tank mounted as high as the highest point of the cooling system to ensure that any air will not make a air lock. Sometimes the cap is on the recovery/expansion tank also. A lot of times the return out of the tank goes to a tee in the lower radiator hose. For your use just about any tank will work. It seems by looking at Jegs site even the different manufacturers interchange terms somewhat. If it has a drain, it's not what you want. Looking for one or two nipples for supply/return and vent and the "bling" is up to you. Looks like the Be-Cool, Jaz, Goza and Billet Specialties all have one for you.