I have BOL and DraftKings. It looks like they both post lines early in the week. However only DraftKings has a few matchups posted right now. I’ll pay more attention next week to when everything posts. Not sure about the limits for either place.If you are betting on NASCAR this year, post what sites you use, what limits they have, when they generally post lines, and if they have matchups.
I use BetUS, BAS, Bovada, and Bookmaker, but would like other options.