Low_N_Slow

While I'm figureing out the lil finishing bits for my interior. I Live on the sound side of the Outer Banks. So the wind blows salt water =) I got the Z from my dads estate. So the car spent its life in Richmond Va. While I'm cleaning up the surface rust what should work better?? Napa offers "chassis saver" or is there something better? Say like the "rino liner". Lol I'm sure a Z is non beach worthy but it will be driven in a very harsh climate.