Errr actually i agree with Woody.... they are not original shaped TRX1 front arms. Forgetting the colour for the moment of course....
I've gone up to the loft and checked all three of my TRX1's, my TRX3 & TCP and there's no match for the arms you have - and i have a brand new pack of white TRX1 arms and yours are definitely different.
I thought they could have been the shorter TRX3 arms but not them either. I'm thinking early Bandit arms ? And i presume the F & R knuckles are Bandit parts also ?
Dosent really matter, as just seeing the pics of the new-build is cool
Hell, i might even have to get my runner going again