boost rings
the only thing i see wrong with going with these rings are that they are a 4.040 bore and im running a 4.030 piston could i file them down enough to a 4.030 anyone done it? i really dont want to spend 300 bucks on a set of total seal steel rings unless it is completly nessesary, or i hear that they are 100% worth it.
thanks
seth

