i never used teflon but i did use silicon....makes for a very good seal...u should be able to suck on one tube with the other plugged with a finger and should not notice any leaks...if there are u need more silicon between the areas that connect...if u look at my website again u can see where i have mine mounted...i just quickly fabbed up a piece of steel that bolted to the thermactor pump bracket..since i dont have a thermacor pump its fine...my main page has a few different angle engine shots....but every car has different mounting areas...i fabbed up something out of plywood and angle brackets for my hydroboost unit to sit in...it goes in between the radiator and the grill...barely fits an has to be taken out from the bottom...but its in a very good spot so i'm not complaining...most people dont even notice it till i point it out...so thats a good concealed spot where it wont stick out...what year are those penny's...the newer ones have almost no copper in them....u can actually melt them with a torch....but the old ugly ones that have turned green are awesome copper sources...but it doesnt really matter since there is still some copper and u got plenty of other stuff in there....i ended up spending almost 20.00 on BB's...sure needed a lot..lol...
