ASE X-1 Exhaust test?

anyone taken this? i’ve got A1-8 and L1, figured the X1 would give me another patch and i don’t have the money to sit down and take all the diesel tests right now, and they won’t do me any good anyways. should i get the study guide? or is this a basic welding/fab test? just curious how “technical” it can get.

thanks
-Zac