spool on the street?

So I'm building my dart mainly for road course racing but it will see a couple days a week of driving around. Moser offers a nice kit for my rear dana(I'll need new axles etc for my Dana) and it comes with bearings, spool, axles, studs and up to 35 spline axles. It's only 630 bucks USD which isn't to bad. I know a spool isn't preferable on the street but I'm thinking it should be alright for how I'll use the car. Anyone with experience able to give me some suggestions?