Vixen 2500 ARB upgrade

[280i]

Greetings all; i have a 71 vixen 2500 (vixen frame not M frame), and was wondering if the Triumph Spitfire 15/16 Anti roll bar is a drop in part? I can pick one up on the cheep is it worth putting in without a rear bar? That TR6 Lump is very heavy. Note i have 6 Spax dampers on the car with 185 spring rates all round. Thoughts would be appreciated.
thank you

[tvrski]

The width is a bit different so you'll have to do some bending and the droplinks are TVR specific.