Since the last video we have completely fabricated and installed the 1987 Buick Grand national Garrett turbocharger to fit draw through on the 1980 Buick regal. These modifications can be done to any 1978-1983 Buick Regal, 1980-1981 Pontiac Trans Am Turbo, or the 1980-1981 Turbo Monte Carlo. We upgraded the carburetor from the stock Rochester 4 barrel to a Summit Racing 4 barrel carburetor using a spread bore adapter. Fabricated downpipe and converted turbocharger from internal to external waste gate by welding shut internal waste gate valve and installing external waste gate to exhaust supplying turbocharger. It was a lot of work to modify turbocharger to adapt to intake manifold but the results are great. We installed a new 3 core aluminum radiator due to the factory radiator finally leaking out of usable limits. Thank you for watching. And remember, Knowledge is Power, Its Horsepower….