Stock SR is fun....
I agree with the Wiring Specialties harness, plug and play and saves you from having a ginormous headache! I told Yuri that I was installing a megasquirt standalone system and he added the extra wiring I needed. So far I have no regrets on my swap.
Not fully built yet, but, almost there....soon hopefully. So far I have extracted over 340hp from the stock block (with very supported mods).
Good luck in your decision, whatever that may be, and most of all have fun. Let me know if you have any questions....