174/177 supercharged small block, where to start?

Well, what do used 6-71s go for?
I seen one go for around $3500 or so..


I used a 6:71 on my 301 Chevy many years ago which was awesome yet in this day and age with the technology we have today, there are way better setups in which to go fast than to impress your gas station attendant of whats under your hood.

:D:D