Small to big wheel adapters

Bought keystone 5 spoke wheels for the hornet and I decided that I dont like the look so i want to put on the Valiant. Are the adapters ok to run on the car, if i take it on road trips or something, like driving it across a state or two? Or should i just invest in upgrading to a bigger bolt pattern to run the wheels? Thanks

I have a full set of 4 of these adapters if you're interested. $80 for the set...much cheaper than upgrading. one of my buddy's had these on his personal 1972 Duster for 5 years with no troubles. he scrapped the car for reasons of "rust". [email protected]