after spending many hours reading different posts on the internet i called the nos tech at holley and he said to install the plate on top of the manifold then spacer and carb so thats what i did and asked him about there jetting charts he said they are very conservative and many post say there to rich so i decided to swap the jets i have so my starting point is .061 n20 jet .055 fuel jet and will tune from there after i tune n/a to the limit and then start to compare numbers i used a n20 calculator i found online with 6.5psi fuel pressure and 900psi bottle pressure those jets should give me 168 hp and 142.83 to the rear wheels round it off and call it a 150 shot should be a interesting summer wish ct. had a dragstrip so i could get in more test and tune or track rentals towing the car to new york is a big expensive and a long ride.