Bill,
I have retrofitted my 70 Spitfire with rotoflex and a swing spring. It was
not a straight forward conversion and took some time since I had to weld
brackets and use the Triumph Tune shock conversion. The e-brake was an issue
too.
If you have a GT frame I would certainly recommend the rotoflex over anything
else. I use my Spit for autocross and all other set ups I tried including
anti roll bars resulted in the Spit "lifting a leg" with only one wheel on the
ground in tight corners at speed.
Cheers,
Darrell
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