340 x heads

Why? if they are good, fresh, uncut heads they can bring some good money. 915, or 587's can be picked up cheap and are fairly common.
Cheaper? I beg to differ, the difference will be a good bit of the "budget" needed to finish the heads without out of pocket expenses.
perhaps I think to much.
just trying give some insight. good luck with what ever you decide to do! =)