pretty sure the side channels are isolated and the bottom is seperated by a piece of metal. Reason being that your defrost comes through there and is isolated to just the bottom of your frame to defrost the linkage.
1976 CJ5 - 232 I6, MC2100, YJ Booster, Front disc conv, 2.5" BDS, 1" Body Lift, .5" lift Daystar Shackles, 33 x 10.50 BF KM2, Twin Stick
[URL="http://www.jeepforum.com/forum/f8/slow-76-cj5-rebuild-1118617"][COLOR="blue"]My Build Thread[/COLOR][/URL]
"Oh, you're just full of fun today, aren't you? Why don't we go up to the old people's home and wax the steps?"