mack bulldog & 2 exhaust stacks

I need a Mack bulldog & 2 semi exhaust stacks. My dad built this real truck when I was 9 years old & had to sell it to support our family in rough times back then. I am trying to build a custom 1/24th scale plastic 65 Chevy stepside model for my dad for Christmas. The model that I have is a 1/24 or maybe 1/25?, so I think maybe a 1/32 scale would work. PLEASE let me know if you have these items. My 5 year old son & I are trying to surprise my dad with this, this is all we need to complete it.