When I bought the Dart in my avatar it had 5.13s on a moser spool. Like a dummy I swapped it out to 4.88s. Should have keep the 5.13s for rhe street. 4.88 is more of a hiway gear. lol
I have 4.88 in my tubbed cuda' but I am pretty sure they are not staying there long, maybe go clear down to 3.73 in that one, twin turbos need long legs to spool.