There are a good number of differences. The coolant passages are different, and I believe the pistons and rods are beefier in SC's, but I'm not totally sure. The biggest difference for you is that SC cranks are forged, and yours is not. Putting 11 or 12 pounds of boost into that motor is a ticking time bomb, which is bad for you as you seem to be awfully attached to it. You could do the swap, but you'd really be limiting yourself to what you could do in the future because you'd already be well past what the NA 3.8 is really capable of. There aren't many blower/intercooler parts available from Ford anymore, and even if they were, what they would cost you would be way more than what the car is even worth. Intercoolers are pretty much non-wear items, so don't worry about getting used ones if they are in good shape (they're cheap). 89-93 blowers are pretty cheap, 94-95's a little more expensive. You can't overdrive either of them though because you'd most likely break something, so it doesn't matter what you get in that department. Nobody mentioned this yet, but because of the differences in coolant passages in your motor and the extra stress you'll be putting on it, I'd imagine your car will be even more prone to head gasket failure than an SC would. I could be wrong though. Basically, you could get the parts to do the swap (used), but I really don't see the point in doing it to an NA motor. You wouldn't be able to safely get anymore power out of it afterward, and even with stock SC parts you'd already be putting down more power than what that motor was built for. It's just not that strong. Plan on it blowing up if this is what you want to do, especially if you drive it hard or try to up the performance.