mcmaster carr has gas strutts 4'' to 40'' and in lbs of force up to 400 lbs force
i have designed them on many industrial applications and then on the tonneau and trunk on my 58 truk
i have also designed a few hood strut kits for new cars to replace the hood prop rod
it takes a little engineering to figure out the pivot points, length and force required
i did not use this design the strut intruded to far into the front space, location above works fine