I like to add a comment to my review. Though I am not really convinced of kit no 35119's value as an update improvement to the Meng kit, I would, however, point out that things are very different if the donor kit was the Italerie/Revell offering. If so, just about all the parts would make a vast improvement. The side skits may have fitting issues; however, I've tried Meng's side skits and they've only shown minor issues. Since PSM's side skits fitted exactly to Meng's kit it would be safe to claim the fit of PSM's parts would only need minor work to fit too. The rest of the parts would fit without trouble I think. The only parts that would be unnecessary would be the exhaust grills - Italerie's and Revell's are fine as is.
A point to take into consideration with this is price. As you can find Italerie's Leopard kit for 20€ ,and PSM's kit is 36€, the total is only slightly more expensive than Meng's kit! You will, however, end up with a fare better model.