Coilover, your frame cross members appear to be significantly different than mine? Mine is a straight horizontal channel riveted inside of the top flange of the frame rail. Your frame rail seperation also appears to be wider than mine as the Blazer tank is reported to be 28 3/4" wide and my lower frame flange spacing is 29", it may be an optical illusion but your frmae rail flanges appear to have a lot more clearance than expected. Your tank is also clearly behind the rear differential but the Blazer tank is reported to be 28 1/8" long and my rear differential to rear cross brace is only approximately 18".
Thanks for the pictures and information regarding the side fill. It appears that the filler tube can be routed over the frame rail and have clearance to the bed which is good news.
