So, I am in the process of converting my 85 gt to larger brakes and rear discs for the purpose of running open track days. I have already picked up sn95 spindles and hubs. I was planning on going 2000 cobra r all the way around and 17" wheels but am starting to think of the 14" brembo setup and 18"fr500 wheels. My ?'s are,1- is the 14" setup going to be that much better than 13". And 2) Are 18" wheels and tires that much of an upgrade over 17". I have already converted the MC/booster to 93 cobra spec. I'm probably overthinking this for an OTD car but see that brakes are very important on the track and my car is making about 475hp n/a at the wheels so I'm hitting 100+ mph on the track. Thanks.