I'm tring to decide between going with gapless top rings or the more conventional route. I saw about a year and a half ago there was a tread but no engines had come back to be refreshed yet. So my ?'s are

1 how much H.P are they worth
2 how many of you have had issues with them
3 what is the proper break in procedure
4 how is the engine wear
I run a 87 camaro with a 305 FI
Thank you for your time.