bro g10 will fit after alteration and u will spoil all ur engine bay never do that ull cry... i had alto 660 its not that fast but it is an efi engine and u can get it around 30 to 40 but its an bolt to bolt efi swap no alterations just need to remove ur engine and put this one in...but the draw back is finding parts after wards for these engine is tough and expensive .tcz
Thanks for sharing your experience
go for G15
bhai alto rehne deni hai jahaz ni banana:D:P
alto engine bay is already very small..engine swap will b difficult,ull end up with ruining the car and nothin much else..better get it overhauled if engine is weak..alto never was supposed to FLY u knw! none of daily run cars are!