That MOPAR setup is obsolete, and very difficult to find if a part ever needs to be replaced. GM HEI stuff is plentiful and cheap, and can be adapted much easier that Deve's Rube Goldberg system.
Jerry Show us Jerry. Include any machining costs for those of us that do not have that knowledge or equipment. RockAuto's price today is $22.79 for the pickup and $3.19 for the reluctor. The reluctor would need machining, but given that it is just a lump of metal I don't see how it could go bad.
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
| 
