wont spool "quick" with .86 and S4.
I would personally recommend staying away from BC and go with either Tomei PONCAMS or JWT S3, S3HL or S4(in that order). all of these cams can be used without new valve springs.
from JWT: "S4 CAM SET SR20 BILLET 0.464" LIFT / 266 DEG.DUR. A LITTLE MORE POWER ABOVE 5500RPM THAN THE S3 CAMS, BUT A LITTLE LESS LOW END TORQUE."
OP have you looked at the
http://zilvia.net/f/tech-talk/124925...-sr-motor.html
most would recommend if you are staying under 400hp get your T2 with a .64 housing(not.86)