Maybe one of these similar products would be of interest:-

VIM TOOLS RDS1G Race Day Expandable Seat 250 lbs Capacity Expands to 17.9 Inches

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Transmission Jack 450 Lbs Capacity Transmission JackHeavy Duty Lift 7" to 23"

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????7" to 23" 450 lbs Capacity Low Profile Transmission Jack Heavy Duty Auto Repai