Brake conversion?

[Deereman_1]

My 68 Coronet was originally a small block car so it has 10inch manual drum brakes on all 4 corners, I plan to install a 440 in it so should I swap out the 10 inch rears for 11 inch?

 

[Ray70Chrg]

the front brakes do 70-80% of the work.

 

[68-500]

Ya, I thought about swapping fronts to 11 inch on my 4 corner 10” car. I can easily lock up the rear brakes.