Hey i just got a few quick questions!

I recently bought my st and wanted to drop it down abit and am pretty sure i am going to get eibachs as most people on here seem to recco them. I was wondering if you can drop it by 35mm and fit the 12.5mm spacers without any rub?

I was also wondering if there are any cheaper places to buy them other than from pumaspeed or ruderacing?

One final question, i am also considering a induction kit (K&N 57I again highly reccomended) and was wondering if u had to fit the flexi pipe with it to get any notciable changes or will the filter be enough at least for the time being?

ty for your help