drive shaft length?

hey guys, new to this forum. i've posted on a few others for a while. and asked the same question as well and can't seem to get a bite on it. anyone know the proper length of drive shaft for a 98 rcsb 2wd auto. has an lq9 with a 4L70. was looking for the proper yoke spline as well. pretty sure it's 27, like the rest of them besides the 80s i believe. thanks for any input guys.

Yes out put shaft is the same as 65e. I guess your length would all depend on where your engine is sitting. Measuring is the only way to determine what you'll need. Dr