Back spacing and tire sizes

Mine is a 69 with sbp 8 3/4 rear, ssbc disc conversion on front

I have 15x6 3 3/8 backspace on front with 195-60 15. Could have done 205 probably.

I have 15x8 4 1/4 bs on rear with 235-60 15. My car sits high in back, have lot of room. Maybe could have done 245

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Looks good, thank you.