72 Plymouth Valiant
I'm still waiting to install my motor, but I may have a spare 1973 340 bored 0.030" over with aluminum pistons, ported and polished heads, holley street dominator intake, and other engine goodies. Depending on your timeline, I may be willing to sell the motor towards the end of Spring. It all depends on how the other 340 that I bought runs. If it checks out, then my '73 340 will be for sale.
Welcome to the site and good luck with your build.
-Mike