What he ^^ said, CVH exhuast is on left hand side, Pintos being on the right hand side.

The CVH Sierra has management (ESC Hybrid), and will be have a Pierburg 2V carb or will have CFI if 1990 onwards, the management will be different to that of the EFI Pinto, but as you are going with carbs then you won't be requiring this anyway. You will just need to sort the ignition side out as this will be electronic.

Martin