I have a factory 318, 1970 Dart. Going to replace the torsion bars since I am pulling out anyway. PST sells a 1.03 size and a .89. Their chart shows the .89 for a big block and the 1.03 for a small block. Do you guys agree before I order and is PST a good product. Also should I replace the adjusters? the car has 160,000 miles
Thank you
