Get a MSD BTM, around $250 new. Set it to 1.5degrees and run 91 or 93. Ive done this for the last 3 months and its ran great. Of course I have no way to test for detination but I run the stock 7-8 PSI and I havnt blown out a head gasket yet so I think its sucessful.
I think Fred did it as well but he was running a 6BTM as well as a timing control. He didn't do to bad. You can get a knock sensor system from MSD if you want to and it will keep you somewhat out of trouble if you're fast off the throttle.