This listing is for a Pioneer automatic transmission 168-tooth flex plate P/N FRA-100 and Bolts. Flex plate specifications are as follows

This flexplate has a dual torque converter bolt pattern to accommodate 10-3/4" and 11-1/2" torque converter bolt circle patterns for the TH350, TH400, and 700R4 automatic transmissions. This size flexplate fits many Chevrolet-designed V-8 engines available in many Buick, Cadillac, Chevy, GMC, Oldsmobile, and Pontiac passenger cars and pickups. Fitment includes the following Chevrolet engines:
CHEVROLET SMALL BLOCK V-8
  • 1975-76 262ci
  • 1979-82 267ci
  • 1976-85 305ci; with 2-piece rear seal
  • 1968-73 307ci
  • 1968-69 327ci
  • 1968-85 350ci; with 2-piece rear seal
  • CHEVROLET BIG BLOCK V-8
    • 1968-70 396ci
    • 1970-72 402ci
    • 1968-69 427ci