Thanks all for the info, 3:42 is still pretty high but it seems there's a LSD in there so I'll try and keep it.
The car is Gary Bogosians roadster from way long ago when the AAA and FIA had a 4.5 Liter--270 cuin un-supercharged class. When I get it back together, I'll send pictures, it's pretty rusty and nedeed lots of reconstruction done, I'm ready to sand blast it all next.
