Quote:
Originally Posted by gmc684x4
My understanding trucks with t400 came factory with high hump
I did this on my 68 gmc when i went from 2x4 to 4x4 there is a spot welded ring that is below the floor pan for use of bolts not sheetmetal screws to secure high hump pan
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...Yes TH400 trucks had high hump . I got a used cover from a donor truck 'cause my '67 C10 already had the floor cut and a truck 4 spd with a butchered high hump . I cut a fresh hole for a car 4 spd shifter and I'm still using it today(24 yrs later.) Now it has an TH400 shifter mounted in the same hole.