I'm swapping a obd2 gsr into a EG civic (obd1) I already have a cat-back 2.25" exhaust installed. okay heres my questions;

1. Can I use the stock mounts from the 98 teg to fit my EG?

2 Is that true that the easiest way to do the wiring is the buy a
p72 obd1 ecu?

3. What cat should I use? My friend is gonna give me his cat from a type r teg - is that the best cat to use? does it matter?

please anybody help. We're planning on doing it this weekend
Thank You