hey guys i have a 525i automatic now and am looking at possibly either getting a 540i or just do a 5 speed conversion for my car ,but i figured out that the swap is going to cost about 4 grand. so id rather invest in getting a 540i with the manual transmission,plus the extra power would be nice too . Well my question is what do i need to look for when buying a 540 compared to the 525i i currently have.????