the tti instuctions give you the correct left and right measurements along with the proper height measurement. It's about a hundred times easier to install these headers than it is the cheap sets. Trust me i know, bought a cheap set first, they have grass stains now from being chucked across the yard! Lol.
My Dart has power steering and power brakes. You will be removing the brake booster for the install. Couldn't get motor up high enough with it on. I am using m/t valve covers on the motor though.
Do it on a lift if possible, I did it in my drive way, got car about 3 feet off the ground.
I'm also using the column shifter and all the linkage fits, it has to come off as well for the install.
I'm really into camaros, my first love,the difficulty level of installing the tti headers are comparable to installing cheap headers on a second gen camaro with a small block. X2
I would buy the tti headers again in a heartbeat.