MODEL OF UNIT IS 25031907. IT WAS DESIGNED FOR THE YEARS I STATED FOR THE CHEVY CAMARO AND THE PONTIAC FIREBIRD TRANS AM V8 ENGINES ONLY. WHEN THEY 1ST DESIGNED THIS MODEL UNIT IN 1981, THEY HAD A LOT OF ISSUES REGULATING SPEED FOR THESE HIGH-PERFORMANCE ENGINES SO BY 1982 THEY FIXED THE ISSUE WITH THIS HIGH-PERFORMANCE MODEL # 25031907 TO KEEP SPEED STEADY WHILE CRUISING.
