If you recall John, I dealt blind without seeing the LT1 and we've now spent a great deal of time carrying out our own inspection. Amongst many other things, this involved dropping the sump to check crank etc. You might recall I asked you if you had dropped the sump and I'm pretty sure you said you had not. Everything we found checked out LT1, even the 4-bolt main cap part numbers. Everything photographed for the next owner. But that's just for starters as we also found out so much more. Another small point, the car has only the one fuel line, and the car has never had a body-off. You were correct about the a/c being retro fitted and we too found later part numbers behind dash that supported this. Also, as we dealt blind, we did not have the full documentation to view before the car reached us and there are a great many references in the Stateside invoices all referring to LT1. But above all, the main thing that's now convinced us is having made contact with past Stateside owners of the car, this was only made possible once we had the history folder. We've extensively discussed the car with them and we are more than satisfied with their response.