Just entered the world of rotaries
 

Hey all, i just recently purchased an '83 RX7 Limited Edition from a guy at school. He was in the middle of an interior swap from the 83 dash to the 84. I have all the parts to continue the swap but i have a few questions. If anyone here has already done this swap, how hard is it. i have the new dash harness and was wondering if it will just plug in or if i have to splice into the factory harness?

Thanks in advance for any insight or help,
Josh