1991 Luhrs Tournament 350 Engine Replacement?

[tkhoff]

So I am hoping someone can help. We have a 1991 Luhrs Tournament 350 with twin 454s. One engine went down last week and our thought is we might as well replace both based on age and wanting to do it right. The boat is in near perfect condition and is exactly what we want. The question is about the price/value of replacing the engines. We are looking at $24K to do both engines (not sure yet if this is a good price and will be shopping it). Our best guess on the low end prior to having the issue with the engine I would have valued the boat around $30K.

My question is this:
If we put $24,000.00 into a boat that was previously worth $30,000.00 how much will that affect the resale value? Not that we would be selling it but we are trying to gauge the value of repowering at this point.

Any thoughts would be appreciated.