You want a 5.29/5.38 combo since it's a much closer match than 5.29/5.13.

I've got 5.29/5.38 in my 4runner with 37's and the 3.4 V6. It's a better setup than 4.88's if your goal is a lot of off road driving.
On-road with 5.29's the rpm's are a little high so freeway gas mileage suffers... but if you're running 37's gas mileage probably isn't your primary concern.

Also, the mismatch between 5.29 and 5.38 is only 1.7%. Not enough to worry about. I've been running it for well over a decade without issue, and many others have as well.

'97 4Runner, '06 F350, '86 4Runner, '05 WR450
http://home.4x4wire.com/erik