I’m not aware of the 68 systems but it’s easily determined by a look at the illustration section of the MPC.
As for 69 there are 4 possible exhaust systems but with only two different individual choices for any of the main components
Head pipes are determined by engine:
265 and 350 horse use same 2” pipes that bolt to standard manifolds with stamped flanges. 366 and 370 horse use 2 1/4” pipes that bolt to Hi performance manifolds with cast flanges.
Mufflers are same on all 69 GTO’s with one muffler longer than the other (all 2 1/4” head and tailpipes are reduced at the fitting so all cars can use the same mufflers).
Tailpipes are determined by transmission:
Manual transmissions all use 2 1/4” straight tailpipes. Automatic transmissions all use 2” Two piece tailpipes with the back end pipes incorporating canister resonators.
This produces four possible combinations
__________________
My Break Away Squad
1969 Fbird (base OHC, 350, 400HO & Sprint Cvt’s - 400HO & TA ht’s)
1969 Custom S 2dr ht
1969 LeMans (2dr & 4dr ht & Cvt)
1969 LeMans Safari wagon
1969 GTO (2 Cvt, 2 ht & Judge ht)
1969 Cat (3 Cvt’s & a 2dr ht)
1969 Ventura wagon 2 seat
1969 Exec 4dr post
1969 2 Bonnie Cvt's & 2 wagons
1969 Bonnie Brougham (4dr ht & Cvt)
1969 Grand Prix 2 SJ’s
1969 2+2 2dr ht (Canadian)
|