brother alpine type r are not available in lahore its only available in khi.
ya 308 is good sub around 4200
but if u want great quality then try cervin vega hed series 15inch or new model cervin vega V-max 15inch with red one. only one sub is enough for u.its would be round about 8 to 9500.
or if u wana use pair then try something new everyone here use poineer poineer poineer:
sonyxplod 1200 watt subwoofer is great and better than 308
do;t know the exact model but here is the pic. i heard these 2 and found them increadible.
single one is around 3500 and its in ur range u can install a pair.
a/a