On Fire
you may already be aware of this but on chevy trucks w/8 lug 1970 and earlier had 1/2 inch lug bolts .... while 71 and up have 9/16..... yours having the front disks which were also only supposed to have started in 71 ...... may already have the 9/16 lugs.....
this makes a difference in wheel selection.... lots of wheels available for the 9/16 lug for chev, ford, dodge, int....... but very few for the 1/2........ know they made special conversion lug nuts for adapting later wheels... but for my money would just change over to the 9/16 if you have the skinnier....