911's, especially the older 911's, aren't as forgiving around corners like the newer tech cars that have all the bells and whistles to help the driver stay out of trouble.
What mods have you done to your car, if any? There's no reason why you shouldn't be able to out-pace the newer cars with a slightly modified 930 (i.e: with all the typical bolt-on mods).
Just takes a lot more focus and involvement than the newer cars, but it can be done.
'89 911 Turbo Cab
Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition