@xaj
Nice to know that u r enjoying experince of Both GS 150 & Storm 125,
If u wana go with Wider tyre like CG Dlux or storm's tyre than i wud recomend u to change rear rim of ur GS as well as its stock rim size is 1.60 X 18 which can serve tyre size upto 3.00 X 18 while for wider tyres like 3.25 & 3.50 X 18 or 90/90 X 18 u need rims size 1.85 X 18 or 2.15 X 18. So u can use rim from CG Dlux or Storm 125.
Answer to ur query regarding good mechanic for Suzuki bike is Mr. Asif his workshop is @ McLeod road in market near Zameendar Hotel. Or i have also heared about that Mr. Kashif in Town ship One member already have provided his contact in previous post.
Ucan change complet front suspension of ur GS with Storms front suspension & can keep Original with u. Ucan chack vaialblity from Mr. Asif (mamehmood) of Storm's front suspension with disck brake on Ravi Piaggio Storm 125 Thread.
@Dawoodaslam & email4faisal
Are u guys sure ur bikes are equiped wid 19 size tyre? if yes then tell us how u guys install 19 # tyre on 18 # rim & where did u found 19 # rear tyre?
Faisal pls dont ruined beauty of ur bike by installing front Cowling/Headlight of CG Dlx it wudnt suit on GS. BTW if installed on Storm 125 its looks more attractive than on CG Dlx it self.