There is what can be done and then what it is practical to do. If you don't have a lot of electronics understanding then I don't suggest trying to adapt a completely different system as you will run into issues that you didn't anticipate, that no one else predicted, and which you will be left to solve on your own.
That being said, the SC computer can run the TFI system that you have on your truck engine. But you'll have to configure it correctly and you'll need to make wiring changes. It's not plug and play and I don't have schematics to be able to help you out.
Your existing system has nearly no support. I can write a chip for it all day long, but you can't tune it or make any changes yourself so I don't see that being a good long term solution. The truck processor is the same processor as the SC, it's just programmed different and the hardware outputs are different. From a hardware standpoint, your EEC is fully capable of running a turbo or whatever you want, but from a software standpoint, there is not enough aftermarket support to bother with the 88 P/U EEC.
You need to convert to a supported software platform which would be any Mustang or SC processor from 89-93. The Mustang has the same layout as your distributor based TFI system so it would require the least adaptation. Also, be aware that DIS (89-93 SC) and EDIS (94-95 SC) are two different types of ignition systems, just FYI.
All MAF based Ford systems are fully capable of running any form of forced induction you want, so that is the least of your worries. Ford processors process all required engine management functions on a per event schedule. IE, it reacts between the time it takes one cylinder to fire vs. the next until it reaches the limit of it's clock speed which in terms of an rpm limit, on a 6 cylinder engine would be north of 7500rpm. You won't have any issues with processor capability on any Ford EEC IV system.