need info on multi-piece wheel widening.

i have a set of blitz technospeed z1's... however, the offset is off by around 20 mm (around <1 inch), therefore best alternative is to widen the lip... besides, my lips are damaged and a nice/new/served fat lip would look best. if you guys could direct me to a place who can widen just the outer half of the wheel, i would really appreciate it.

thanks for your time!