third time at track...OK but.........

Good to see the 60 ft improvement I think you will struggle to get into the 11's with that convertor , but I'd like to be proven wrong . 4000 + convertors are good fun for a squirt round the block but not so much on a long drive through traffic , I wonder how much help a 2.74 1st gear would be , probably not much for alot of money .

Sounds pretty good what mufflers you using.