If you were to look at the stroker piston and a late model engine piston you would see it's not an issue. The stroker piston isn't really a short piston in comparison to engines built today. Let's do some math. The difference between a 4" stroke and a 3.58" stroke is .42". Half of that moves the pin up .21" . That is less than 1/4" . The only reason to shorten the skirt is for crankshaft counter weight clearance and maybe a little skirt to rod clearance. Again, not a big deal. I built a couple stroker small blocks and none of these were an issue. Shortening a skirt reduces piston weight and this is where most aftermarket and late model pistons save weight. If you were really worried about it you could use a 6" chevy rod then the pin height would only change .087" .