Centerline auto drag 15x8.5 on 69 Dart

What back space did you go with on the 15X8 inch wheels .. and what size tire have you been running ?... thanks
15x8 with 4.5" BS. 245 60r15, and also 235 70r15. The 245s were very close to wheel lip, closer on passenger side. Only rubbing I ever had was on the raised white lettering. Has a nice look to it. I'll add a couple pics tonight. That was with a 100% unaltered set up.