First off, it's a dohc. ~220hp If a sohc is really in there, it is not the original motor.

Check to see that 60K mile and 120K mile service has been done. (Timing belt). This is VERY important.

You can always convert to TT using VR-4 manifolds, etc....

That's about it.... If it drives well, doesn't leak, and get the timing service done, you should be good.