If you use a Timken roller bearing type c-clip eliminator they can withstand much more abuse than the ball bearing type. The ball bearing type will leak simply because they aren't really designed to seal fluid and are really a straightline only part. The Timken roller bearings do a much better job of sealing fluid and can handle the side loading abuse unlike the ball bearings. However, I don't know if you'd want to run even a Timken style c-clip elim. if you are planning to road race a lot?
1986 GT: Vortech V2 SQ, AFM PP, Stinger PiMPxs (MS3), LSx D585 coils, 64-bit Tuning Cam Sync & Crank Trigger, Pro-M 80 N/A cal, E7s, Performer RPM intake, 75mm TB, 42lb injectors, GSS340, LT headers, 31-spline axles & 9" ends, Pro3i adj. LCA's, FRPP HD UCA's, '99 Cobra wheels, Bilstein HDs, MM Front Coilovers, Bullitt/SN95 13"/11.65" brakes