Nice to see another North Carolinian here. I unfortunately don't have an RP 155. I do have an M13 and actually know someone who has recreated the "Streets" sound with a Digitech Multi Effects unit. I'll try to get in contact with him.
He didn't give me the full settings but he did give the delay time, which is 350 ms. You pretty much only need delay, reverb, and maybe a little overdrive.
If you need any help just ask me, I'll try and find a sound that'll work.