LMC/Heartthrob exhaust system question

[dondb]

I have the whole system for my LWB, SS C-10...kit#4143SK. Anyone who installed this kit, i have 2 questions for original ram horns:

1) Which down tube goes on the drivers side....long sweep one or short sweep?
Called heartthrob and they said short steep goes on DS, not sounding to
confident, their instructions say opposite.
2) Did you use the heat riser.....I don't need it and already gutted it if it needs
to go in to make it fit?

Trying to minimize being on my back with limited room to install the kit.