3 in. (76 mm)
Fits MCM V6 carb & TBI engines with 2 piece exhaust manifolds (s/n 0M614999 &
below).
Fits MCM/MIE/Tow Sports V8 (305, 350, 377, 454 & 502 cid) engines with cast
iron elbows (s/n 0M299999 & below);...