Ok....I am ordering 4 " with Zombies and fishtails for my 2019 Vintage.
I also want a second set of baffles that sounds as close to Official Indian Stage 1 as possible. So...which is it...1.75 or 2.5 ?
The zombies will give you some loud pipes. However, it will hurt performance (information I got from CraigB which is why I decided against zombies). I believe the 2.5 would be around the same as stage 1.
I have the 1.75 baffles. Tested with my high tech ear sound meters they seem to be close in volume but a bit different in tone. May try switching to 2.5 next spring as I have blown my mods budget for this year