Are these torsion bars gonna be too big for me?

One inch bar will give a modern feeling ride. I have 0.940” Firm Feel bars on my 67 rag top, six leaf springs out back with sub frame connectors, and car is softer sprung than my 07 300 C AWD.

Bolt on a front anti sway bar with a 1” plus set of bars, and your car will corner nice and flat. Also you may want to beef up the rear spring rate to better balance the new front spring rates, and install a set of sub frame connectors. You will be happy.