There are usually dozens of Howa 1500 stocks on eBay that could be shortened without a lot of effort.
I have a full length Hogue, or Hogue style, stock that came on a Howa 1500 in 6.5 CM that I bought from Whittaker's in 2016. If you think that this stock would work for you, you can have it for $25 plus whatever the actual cost of shipping it would be.
