Your times and mph seem within range but your 60 is a little slow. I would think somewhere in the 1.20-1.22 range is where you should be with that ET. Not enough info to help though. Could be rear gear selection, tire pressure, worn out sidewalls, launch rpm, shock settings... Get the picture? None of which I mentioned would have anything to do with the 4link. If you're spinning off the line then that COULD be 4link, lack of front end travel, or the other things above.
George