Had a few parts on the scale to compare between spool and power lock

Spool

Weighed a Dana 60 Eaton Trutrac Diff last week and it was 42 lbs.

Those things are PIGS!

Seeing those numbers makes a spool sound really tempting. I may have to change directions on the Dana 60 for the F100.

The only bad thing on using spools on the street is making tight turns like parking or backing into a small space to park.
Some street people will look at you funny when your making those type tight turns when the car and tires are making more noise than usual

Those weight numbers are why I put a spool in my Barracuda....but since it's a Drag Week car, I run wide slicks on the strip, and skinny radials on the street. My first spool, I was surprised at how I really never noticed it in normal driving.

I have put a lot of miles on locker equipped cars, though.

I didnt notice any hard turning at low speeds with my spool on the streets.. I drove the spool for about 4
years on the road before I sold the car