Hi all! Looking for some help/opinions.

I have a T5 box mated to my cosworth YB turbo but have had to rebuild it numerous times as the syncros keep failing resulting in mainly not being able to select third gear. I am not sure why this keeps happening as running just under 300bhp, but it could be due to the exhaust crossing under the gearbox and overheating it.

Can anyone recommend a different box that might be more reliable? Or, does anyone know if I can get improved internals for the t5 so it stops happening?

All help appreciated!

Thanks

Matt