Update on the custom throttle cable:
I ordered a 964 cable (the only 911 throttle cable that I could find), the casing is longer but the cable will not reach the pedal cluster, that was a no go (anyone want to buy a new 964 throttle cable?)
Anyway, I just called TERRYCABLE (1-800-854-4691) and they are custom making me a cable for $45.00 (so I ordered two of them just in case I need another in the future)
Specs on a stock 914 cable: 41" casing, 101.5" total length
Specs for the stock 964 cable: 48" casing, 99.5" total length (actually shorter than the 914 cable
Lessons learned: Just call TERRYCABLE and forget the rest.