im a former mud/water junkie and just found out how much water got into my truck during the earlier years. i have the carpet up and i anticipate there will be water crossings in the future so i want to seal up the tub. i found these 4 holes around the front seats that had loose fitting rubber plugs in them,they all had marks around them where they let water in. anyone know what these are for and will it affect anything if i seal them up? also there appear to be some areas where the seals between the body panels cracked, there were marks around some of these where water came in too. how should i sel those up? im thinking of cuttting a groove where the crack is and filling it with silicone. speaking of silicone what should i use to seal this stuff. im thinking just some clear silicone sealant like they use in kitchens and batherooms, it needs to be in a big tube cause ill be using alot of it. also what do i use on the transmission access cover? thanks in advance.