Torsion bars .89 383 for A body

Hello, want to improve handling some on my 64 Dart without breaking the bank. It has a Slant Six engine. Think the .89 torsion bars would be just about right, maybe even the .92. I'm sure someone out there must have removed theirs and went bigger. The .89 bars would be stamped 894 and 895. Looking for something reasonable with shipping to Platteville , WI 53818. Again, reasonable please and thanks in advance.