Folks practically give Slantys away stock, the problem is the proximity of the parties usually, & the timing. It's worth throwing a pick-up stock mill in for what they go for, to make it a runner, the only thing to watch for is any '68&^ crank needs a spacer ring to center the smaller '67& down torque converter's smaller hub nose. They pop up here all the time, & FB-MP, from free to $$$ depending. Look back through the Mechanical Parts for Sale forum, & use the search function there as well.