Dual exhaust system for L24 ,
Which one I should go ,
The front in the picture is the one for using stock L - series engine header, this is a factory optional item. ( 20100-E4105 : up to 09/1971 , 20100- E8730 from 10/1971) And the back is the one using the race option header for L24 and Z432 center and rear system.
I can see the difference between them,
The front pipe diameter is different, Z432 is bigger than the other. That is why this L -series front pipes have a welded metal piece on the pipes( not only for this but also very long pipes !) , ,and a reinforcement at the joint of the pipes and the center muffler.
About this 20010-E4105 and 20010-E8730,
the rear muffler is used from Z432 system to join the center muffler, so the diameter of the rear pipes of the center muffler are the same that of the Z432 center muffler.
Also this time I tried to show the difference of early and late of the center muffler and the rear muffler. The difference is joint location. When the new center console applied 10/1971,the rear differential was moved 35mm back to align the center of the rear axle.
This change made the joint location back a little bit.
In these pictures, the race header with the Z432 center and rear system is the early type.
The dual system using the factory header is later type( 20010-E8730) so you can see the difference of the joint location between them.
Kats