I\'ll give what the most expensive 328I on trader is going for non cabrio
4 dr., black, auto, I6, fully loaded, leather, moon roof, pw, p/seat, pl, tinted, keyless entry lock, shine & original paint, no rust, no accident, very good condition, very low price. $7,900 include safety & e-test. 126,000 mileage
J/K you should be able to get at least $10K for it.
It all depends on the buyer..Some people will say "Well mods don't bring the price up" And a 5 speed is cheaper then auto.. So 10K or up easy for your car.. that's what I would pay just because of all the mods that have been done to it and your records and mileage.