Two choices on your stock rear wheel tubs, have someone widen them or replace them altogether to new drag race tubs
Keeping the stock look from the inside of the trunk makes it a lot harder is what I think
To do that you will need some stock rear tubs from another car so they can be split and widened
Some guys will remove the inner sides from the pinch joint and make thier own custom inners to the inner frame rails, that works good also
My 1970 Cuda race car has large race tubs in it so the largest rear darg tires(16x33x15) can fit in them, the 1/4 panel opening where enlarged also
Good luck on your deal,let us knwo what you decide to do
