Driveability with a bt(cent or turbo)is fine with
the right parts.
A good bt carb will run you 750-1300 dollars.
CSU and C&S are 2 of the heavy hitters in the
bt parade.A carb MUST be set up for a blow thru
application.There is a website to do the basic bt
mods to your carb(Holleys seem to work the best).
An Extreme Velocity bonnet does a fine job but
you will need a major upgrade to the fuel system.
Basically a large volume fuel injection pump,-8 feed line,
a return line equal too or larger than the feed line(helps
with low pressure fuel pressure spikes) and a boost referenced
carb blow thru fpr.I run 40 psi to the regulator and 6.5 to the carb.
Fuel pressure will rise 1 to 1 under boost so you will have 6.5 psi
more than the amount of boost.
I have 2 carb bt cars(2.3 turbol and a 306) and am thinking of going the same
route with the nitrous wagon.
Go to
www.turbomustangs.com ,click on
message forums and go to the carb and boost section.