Unfortunately it’s a buyers world with a slant 6. What I mean is the value will be strictly dependent on how bad the buyer needs/wants your slant. I’ll wager a guess that you have much more in to the build than you will get back out of it. For a running driving fresh 225/904 combo I could see 400-500 if someone wanted it bad enough. I sold a 318/904 yesterday in good running condition (although not rebuilt) for $100
