mini tub and g-link lower mount question

[tumper93]

I am ready to order my g-link and mini tubs from Chassis Works, on my 68 Camaro, but I have read that to run a 335 tire I will have to remove the factory leaf spring bracket on the rearend and install the other type. Is this true or can the factory bracket be used. I am using using the factory 12 bolt right now and would prefer to keep from molesting it since it may be replaced in the future.