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Buick LS Swap Parts

Do you have a Regal, Grand National, Skylark, GS, Riviera, or early Buick? Looking to put a more modern LS engine in your Buick? PSI carries everything you need to get your ride 'Wired up and fired up!". From our Harnesses Made in the USA with high quality wire and different loom options to suit your needs, Our PCM tuning service where we can get you set up with a base tune for your engine and transmission, Engine Mounts, Dakota Digital gauges, Accessory Brackets, Oil Pans, ETC. 

  • 1963- 65 Buick Riviera VHX Instruments

  • 1984- 87 Buick Regal And Grand National HDX Instruments

  • 1970-72 Buick Skylark VHX Instruments



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