I have a chance to purchase an 04 Cobra drivetrain. We (dad and I) are currently restoring this 70 and should have it back from paint in 2 weeks or so. We have a BOSS 351 Motor and toploader waiting to go in but I recently saw a 65 fastback with a non SCed Cobra motor and became very interested in the possibility of this, especially since these motors are rated at 390 + hp factory (supercharged). Has it been done? I did a search but wanted to make sure the 04 4.6 with the blower wouldnt be a special exception. Is the modification required worth having the newer motor and 6 spd tranny (not to mention the 4.6 sound)?