When I bought my 67, I got all hot 'n bothered dreamin about 5.7, 5.2, or 5.9 swap, with factory EFI. I COULD do the adaption, I'm not afraid of the electronics, but then I thought
I USED to know how to make a carb run!!!
and JUST HOW many miles am I gonna drive the thing? It doesn't HAVE to run every day, be instant start, or even start at very low winter temps.
So I agree. You're spending a lot of money
If done right it will be unique and will run right, probably get better mileage,
but you have to ask yourself..........IS it really worth it?