68 c10 fleetside first truck
 

Bought my first c10 a couple months ago and have been saving to order the parts I want. So far im looking at the CPP deluxe chassis upgrade and running cpp big brake kits front and back and converting to 5lug. I want to order a set of wheels and need some help with back spacing. Wanting to run the 20x10 out back and 20x8.5 up front. From what cpp told me the brake kit im ordering will move out the back 1/8", and the front will be a 1/4" inset with this being said most of my research has turned up is a 20x10 with a 5.5" back space and the 20x8.5 will be 5.25" backspace. wanting to run some good size tires prob a 295/40 and 255/40 the truck will have a 3/5 drop any help in greatly appreciated