There is an exploded diagram compare part numbers.

Those shocks are awesome well though out IMHO, much shorter but able to keep the same pack

Lowering the whole c of g will work wonders for corner speed, which I thought the xray's lacked this will do very good.

I pray the t4 13 will have proper pivot blocks I will pre order now. Motor mount, servo mount all quality, well done xray. This will be a weapon.