Hi, So i know this may seem cheap but I got a set of brand new rims and tires from a friend who had them laying around the past week, they look nice (not the ***** rims) not OEM but same size, bit larger tire 235 instead of the 225 I orignally have on my 323ci, but when i was trying to install...

As said, I own a e46 325. I plan on go FI and find out there are only 330 stage 3 kits. As they share the same bore, I wonder if I can convert my B25 to B30 by changing crankshafts and pistons and etc. but keep the block, bottom and cylinder head? And then go FI.