Dave, nobody knows what your motor would sell for. The right guy on the right day and who knows?
I had a thought (they are few and far between) last night.
You mentioned a blower and some additional power. I have done some serious research on blow through superchargers and meth/water injection. Keep an open mind for a minute and bear with me. I am not talking about the outdated SN93 Paxton Shelby had on his car 40 years ago. I am talking about a serious, power making, easy to drive, pressure oiled supercharger.
As an example, you can buy a Paxton Novi 1200/1500 Supercharger system complete for about 3500.00. You can buy a Snow Meth/Water injection system for 250.00 and make 900+ hp. with the motor you have. NO, I am not kidding. It will take some fabricating to fit and your carb will need to be sent off for o-ring throttle shafts and non collaps floats etc.
A Cobra would not easily fit a large intercooler but a Meth/Water system is the size of a milk jug and fits in the trunk. A cool charge is a must for any forced induction to make power and stop detonation. The Meth/Water also increases the octane 8-10 points depending on the mixture. Guess what a perfect and easy to obtain mixture is??????? Windshield washer fluid!!! The system comes with a boost switch that controls the injection. You can adjust when, how much, and flip a switch to turn it off.
You did not mention compression but it would need to be under 9.5
Example of Meth/Water =
http://www.snowperformance.net/product.php?pk=6
Below is a pic of a blow through on a sbf
Just a thought,