Any green stripe of the right size will work fine. The stuff with a built-in spring isn't really necessary because all the hose runs are very short & straight so they don't suck closed easily.As for the cap, it depends on whether your present unit leaks around the edges or not. The surge tank typically has a very rough bottom where the cap seals, and the depth is a bit further than a US tank. These two things cause a 12-lb cap to release at maybe 6 lbs and leak below that point. I recommend pulling the tank and having the OEM neck removed & replaced with a US-made neck. Then, a 12-lb cap works fine. Unfixed, I dunno- there are 22 lb caps available. Note the cap leakage is cunningly designed to dribble out of the tank, down the inner fender and into a big hole in your rt frame rail.... where it will sit forever, rusting, until you also drill the required drain holes in the bottom. Panteras are aren't simple cars to own! Hope this helps.