Car valuation - effect of modifications?

[mrob]

Not trying to open up a can of worms, but after seeing a few posts from people asking about valuation for insurance purposes it had me wondering about the effect that modifications have on value.

For example: how would you determine the value of a Charger with a modified engine or a swap from a small block to big block? Or with a 4 speed swap?

The resto cars have an easier time determining value because there are published booklets with values. Plus there are auction results.

Just curious what the opinions are ...

[Ghoste]

Having worked in the auction business a long time, my personal observations and opinion would be that GENERALLY, a properly restored and stock car brings more money.  However, very well done (and very few of them are) modified cars can ring the bell.

[odcics2]

Folks like to buy them stock, then do stuff, if they wish.


Lots of modifications are done 1/2 assed!!   

Example - check out all the driveline mods with parts that operate in different RPM ranges!        (not this site, of course)