Here's the definitive answer:
No, you can't put a RWD SR into your FWD car.
The mounts are wrong (the ones that are there are in the wrong places, and there's no provision on the RWD motor for the passenger-side mount), the tranny (even the SE-R tranny) will NOT bolt up, the intake manifold will point the wrong way, the wiring is all wrong, etc etc etc. I could go on. Honestly, this isn't a call-out, but I'm not sure where Super X is getting that info. The FWD and RWD blocks are slightly different castings, and just aren't meant for interchange.
Now, if you've got an unlimited budget, have at it, but it'll be much easier to sell your RWD engine and buy a Bluebird or Avenir setup. I have owned both FWD and RWD SR cars, and I've worked on FWD and RWD KA cars, and this project in my opinion is doomed.
You have a LOT of reading to do. Good luck.