What with all that "shimmking" and "diff whiplash" you aint got a hope in hell. BTW me thinks that should read shimming and backlash
From what little I know PPG need to have the syncro's from an old box swapped into the newer 99 units to compensate for the wider gears. Shims are used to ensure the selector forks align with new gears and many parts may be replaced subject to a conditional inspection. Not suitable for a back yarder
