iI have forsale a H145 diff for Dastun 1200 .
It has a Ultra Low Diff ratio of 6.2 : 1 with a welded centre . this would be suitable for hillclimbs, speedway where you are using 2nd &3rd in a std diff , with this diff you would be using 3rd and 4th on the same track . buy doing this your 3rd and 4th ratios are closer than 2nd & 3rd ratio gaps , selling this custom diff with housing and axles and tailshaft adpator for h165 tailshaft
$150 pick up in Brisbane or Toowoomba