IMO-you need to spend the money on a 12 bolt.
With a M6 Hot Rod on slicks your going to blow up a 10 bolt. I have are ready done it.
I put in a 12 bolt with a Eaton posi, 33 spline axles and blow up the posi the 1st time at HRP. So, we(Thunder Racing)put in a spool.
I do drive my Hot Rod on the street. No problems at all with running a spool.
If I had to do it all over again, I would go with a 9 inch ford so I could change gears more often.
Good luck and Happy Holidays.