68 c10 wheels n tires HELP!

[JMM]

Just finished a 5/5 djm drop on my truck, loving it! But I want to put new wheels n tires, bigger and wider to fill out the wheel well. I'm thinking chrome smoothies and wide whites. Looking for suggestions on size and back spacing on the wheels, how big can I go and still get full clearance? Size of tires? Thanks for any input! Before and after dropping pics.

[69chevy lwb]

Just start doing some measuring you have a set to work with already if the track width is to narrow deduct back spacing or add wheel width to the same back spacing then measure the diameter of your tires and use an online calculator to find an equivalent in your new wheel size it's pretty straight forward just make notes of what way the tires will move with each change and then check the clearance at full lock and bump