There are a lot of options with 17" tires. They will be tubeless, but you will have to have tubes for your multi piece rims. I use used 17" tires with 16" tubes. You will need 17" flaps. Amazon as well as other vendors sell them. If you prefer tubeless, you will probably want to go 16". From around 1972 until 1995 GM used a 16" 8 hole wheel that will fit and is suitable for a tubeless tire. You can probably get custom wheels, but yu have to be careful that they don't hit your tie rod ends.
