Has someone already installed the 68-69 under bumper OAI system on a 70-72? Is there any reason why it would not work on a 71 350 non A/C Supreme?

 

I have seen this both with OEM and aftermarket assemblies in 70-72s. I think I even saw one done on a 73. No reason it shouldn't work as long as you have all the right parts. You have your H/O to use as a template for drilling the holes in the wells in the right location. The lower brackets/braces were hard to come by but I believe they are part of The Parts Places kit now? Now you will need to decide whether to go with the 68 or the 69 scoops. IMO the 68s tuck better. But which design harnesses more air???