Which Distributor?

I have an Accel 59301 - Accel High Performance HEI Replacement Distributors
the advance IS adjustable, unlike the MP one, I have a 6AL box works fine with it and the price Amazon has it for $ $171.50
Jegs has it for $191.00
http://www.jegs.com/i/Accel/110/59301/10002/-1