In terms of pure performance, the Buick Regal probably doesn't rank highly on most people's list. However, it was built on the versatile G-Body platform which allows for various engine swaps and a litany of performance parts to bolt right in. GM knew this too as the humble Regal was the base for the legendary Buick Grand National.

Hays Twister Full Race Torque Converters feature an anti-balloon plate for use with nitrous, superchargers, and turbos. They are designed to accommodate any mixture of modifications including higher compression ratios, aftermarket camshafts, aftermarket cylinder heads, lower gear ratios, and vehicle weight loss.