If the baseplate and shaker are the typicaly fiberglass repos, they will warp or melt: I have had zero issues with mine. I dont beleive my kit is the same as the links, but the parts sure do look the same. I wanted a shaker, but no way was I going to pay thru the nose for a metal hood, the metal shaker base, etc. I dont mind the fiberglass repo stuff: The stuff is lighter and doesnt reflect heat like the OEM styles do. My car didnt have shaker on it from the factory, so getting NOS or OEM stuff doesnt make sense for my anyway.
Looks like the first kit you posted has everything you need for the fresh air function and appearance of a shaker. What you dont get are the shaker doors, air filter (any 15" round aircleaner will work, just check the heighth.nothing special there), actuator cable and pull knob, cable swivel mount, ground tabs or shaker base feet (I made mine in about 5 minutes with scrap small gauge metal)..
You dont need any of that other stuff just mentioned (except maybe the shaker base feet) as long as you dont mind fresh air intake all the time. If you want the option to shut the doors, you can reach under the base plate and flip the fresh air off, without having the get the cable, knob and the cable swivel mount, (which I dont beleive anyone makes repos anyway) I made mine in about $2 in parts thru researching pics
In the first link, it looks like you also get hood springs for that glass hood as well, so no issues there
ar a skfreshe air unctorall