Compatible with Buick 215-350 engines.;Precision CNC machined 6061-T6 billet aluminum housing is lightweight yet strong; Each billet distributor is hand polished and buffed to a high luster; Tempered distributor shaft has low torsion displacement for accurate timing and extended operational life; Upper ball bearing and oil impregnated bronze lower bushing work together to reduce friction and provide shaft and advance mechanism stability reducing high RPM vibration; 20CR Steel Gear Heat treated to surface hardness of 45C Rockwell; Precision stamped and balanced mechanical advance weights eliminate erratic timing; Adjustable mechanical advance with proprietary limiting function permits multiple settings. Distributors are factory set with a performance advance curve and are provided with additional springs for custom advance curves; Premium high dielectric strength cap and rotor manufactured using PBT polymer and brass terminals; Available with Ignitor II or Ignitor III integrated electronics; *: 30 Months electronics / Limited 1 year mechanical; * in all 50 states and Canada. (C.A.R.B. E.O. #D-57-23);