i made the headers and exhaust system at home in the garage.
they were a bitch to make,especially trying to make them look the same and symetrical.
definatly no room for standard manifolds on the drivers side,because the starter motor and steering shaft runs on that side.
but because they go up and then down out behind the strut tower,it makes it really easy to work on.about 5 minutes for a plug change.
as for power,it has run
9.89@133mph aspirated,which probably puts the power up over 500hp.
thanks for the comments,i see some v8 conversions which really look messy,but i think keeping a standard firewall helps to make it look more factory.