The free and cheap days are gone, because the slant 6 is enjoying a resurgence. I cannot find one anywhere near me that's not 350 bucks at the very least......and that's for a core that "ran when parked" or a rusted up POS.
don't tell that to all the old farts around here. everybody thinks it's still supposed to be 1983 prices when they're buying and current pricing when they're selling.