No power loss here, LOL !!!!I'll pretend you didn't say that haha
Seriously though, complete stock exhaust with only change to off-road h-pipe sounds perfect.
If you're going to tune and willing to run DRs, the o/r pipe, 4.10s, drag radials and Lidio tune is an amazing street package. I did that but stock mid pile and went 11.03.
I'll be up there next Sat.
Good luck
-J