These are all 40 year old assembly line correct plugs & what the judges are looking for with the 4 thin green rings.
One box of 8 NOS R43 (resistor) spark plugs.
These are specifically for 1969 Z/28's with 302cid. and 1970 Corvette/Camaro/Nova (Deuce)LT-1 350 w/360HP & 370HP engines respectively only.
A very brief plug.
Mint in the box,complete with compression rings,as most don't include.
$200 +ship for a box of 8 plugs.
REDL78@ATT.NET