I have a 1964 Valiant convertible that was originally a 6 cylinder and now has a 318. The front end sits noticeably lower than the rear. Upon inspection, the torsion bars were 'maxed out', so there is no way to raise the front end any further. What are my options? Do any companies make longer torsion bars.? Also, do they make front/rear sway bars for this year/model vehicle? Any input would be greatly appreciated. Thanks.