I'm a drag race guy, not a roundy rounder or sportscar track guy, I left the stock 6 cylinder non air conditioning torsion bars in my old pump gas 1971 Duster, I did use a good set of double adjustable shocks on the front and ended up with double adjustable coil over shocks in the rear, that car worked fine on the street and strip,
Best ET was 9.993 at 134.+ MPH cork up with the air cleaner on using Oregon 92 octane pump swill in the 10.75 to 1 comp. ratio 400 block stroker motor, it road and handled fine on the street also