Crate Motor

Hey everyone, I have a numbers matching 1970 340 Dart and I'm thinking about selling the Motor and buying a BluePrint crate 408 short block, The numbers matching is great but not life or death to me. I want more power but really can't afford to have the 340 totally rebuilt into a 408, I figure I could sell it and buy the 435 HP short block from BluePrint and have some cash left over. I'll never sell the Dart its going to my son when my time is done. What are your opinions, I've been thinking about this for a while and its driving me nuts. What is the average price for a 340, it runs good, has good oil pressure and will be sold as a short block with drivers side exhaust manifold and starter.

Thanks Jeff
I very much doubt that you can get that kind of money $ for your 340.
By the time you purchase the crate engine and all the parts you will need to make the swap you will throw a bunch of $ at it.