Need help and info to help out my autistic son with his project

I never expected this engine change to be so hard just to even find wheels all I'm trying to do is help out my son with his car I know he's autistic and that he bought the wrong type of car to do this with but it was what he could find and afford now he's so frustrated and about to give up. And he's already got the motor almost done and the trans and now has been working on the body it's not going to take him long to finish that then what's left is interior which isn't that bad in that car I just hate to see him give up he's already done so much and now to find out the wheels are a big issue after we already bought mag wheels 14-7s but with a Dodge 4.5 bolt pattern and now found out they don't fit I don't know any magical ideals that will work but I'm willing to do what I can to help out my kid