Overheating issues on a rebuilt 360

I'm a fan (pun intended) of mechanical fans OEM shroud if you must. Not a fan of thermostatic fans, I'm on the fence on electric fans BUT they have to be sized correctly and the shrouds that typically come with them typically are very restrictive, (a member had a shroud that was blocking about 50% of the air flow)

Just my opinion, others will have their own