The new to me '71 RR w/ 318 , Auto, is running a bit too warm. Running around town..... even at a constant 45mph it was getting to 210-215 on an 85*-90* day. Here's what i know: - Has no fan shroud. (i know it needs one) - Has a skinny bladed flex fan - Has 13# radiator cap, that probably wasn't sealing. - Looking into radiator, veins i can see look great. Clean, and no mineral build up. Fins are in great shape, radiator overall looks very good. I pulled the thermostat, was a Gates 195*. I boiled it and watched it operate and at what temp it opened. Worked perfectly. I bought a new one, did the same test and while it operated the same, it clearly didn't open near as much as the Gates. I installed the new one looking for a different result and really saw no change. I've replaced the radiator cap with a new 16# cap. But have not run the car again since. I will check timing also but have a feeling it's probably not the cause. Engine starts well, and does not ping,..... Anyway, I'd like to get a fan shroud on it. Do they make reproductions? How do i measure to see which radiator i have ? Is it just a width measurement ? Also, looking at several cars this weekend at a local show, almost all of them were running fan clutches and steel blade fan. Would a 71 had a fan clutch ? I'd like to run one if it's recommended.