Anti=collapse spring?? I got this car empty with no radiator or hoses, so I assumed the lower hose as I bought from Napa came complete. No spring. My hose down there is a little oval at the bend, but I think it will soften up with heat and be ok. My temp gauge on my trial run went up to 185 and pretty quickly dropped to 165 when the fans came on. Car seemed to average 180 while driving. I will keep an eye on that hose as the summer progresses. But the Griffin exact fit combo unit from Summit gets a 5 star rating from me but it was $1200. Being a Veteran, I still support America and always try and buy American if I can do it. Regarding the Griffin combo unit, if you get one for your abody. I had to cut the side brackets off because they projected about a half inch forward of the radiator which pushed the electric fans a bit closer to the nose of the water pump than I felt comfortable with. So my welder just sliced them off and moved them back so the face of that flange was flush tieh the front of the radiator. That gave me close to 3/4" of space between the closest point of the fan and water pump nose. Also, when you get the package just throw away the cheap sensor they put in the Spal ralay kit and go online (summit) and but a good stainless steel with the 3/8" threads so you get a good ground signal. I am also running the Evans coolant in the system which takes care of not need to worry about winter freeze and is suppose to be real good for the aluminum radiator, heads, intake with no corrosion issues. Looks good, runs good, and I supported Americans. Win win win.