[Aussie Mike]

Hi Craig,

Garretts box got new syncronizer assemblies for 3-4 and 5-6, Billet steel synchronizer keys, new synchro rings and a steel 3-4 shift fork from the viper box.

The gears them selves were in good condition still just the dogs were taking a beating. The pressed steel keys flex, bend or break and cause the synchronizers to hang up when shifting hard causing more wear on the dogs. I think the dogs are going to be the weakest link in these boxes and that all comes down to how hard you plan to shift. Garrett takes no prisoners with the shifter and it seems to be holding up OK (time will tell).

The next step up would be to use a G-Force cluster which has only a slight angle on the helical cut gears (they are almost straight cut). They also have triple cone synchros for 1-2 and 3-4 where the standard box on has them for 1-2 . The dogs on the gears are also removable so you dont have to replace the whole gear.

It's not a cheap option though as the G-force cluster is nearly US$2K before you even get it landed in Aus.

I'd try a beefed up standard T56 first and see how you go.

Cheers