This fellow on ebay refers to them as "stance" tires. He has them in different sizes, but they all include wheels. Don't worry about him being from Ukraine, I have a few of his items and the quality and service was great. http://www.ebay.com/sch/m.html?_odkw=&_ssn=oleks-dmitr&hash=item3ae1e62c4d%3Ag%3A5eQAAOSww3tY4NnV&item=252898061389&_osacat=0&_from=R40&_trksid=p2046732.m570.l1313.TR12.TRC2.A0.H0.Xstance.TRS0&_nkw=stance&_sacat=0
You just need to do a little digging, There are so many different releases, but pretty much after the 80's they are all the same except for the decals. The latest versions have been released through Dirt Track Racecars. First link is reasonably priced, the second is pricey but appears to have the original decal sheet replicated. https://www.ebay.com/p/?iid=252841175920&lpid=82&&&ul_noapp=true&chn=ps http://www.ebay.ca/itm/AMT-DIRTRACK-RACING-1932-32-FORD-V-8-COUPE-3-IN-1-MODEL-KIT-OPENED-/311835072509?hash=item489ad197fd:g:xAsAAOSwuxFY2ub9 And Dirt Track Racecars has the same kit a little cheaper, 3rd item down the page. http://www.dirttrackracecars.com/OrderModels.htm
You can also consider backing the break with a very thin sheet of brass. You can get it as thin as a sheet of paper and it will hold the joint. If you make it as long as the windshield support, the kit's windshield post wont need to have any strength itself.
Your photos bleed over into the banner ads and the reply box like there's a virus or something. The link is fine, you've got some great pictures in there. Edit: fantastic pics. I haven't seen the Tamale Wagon in ages.