First Lingenfelter car pricing

[PxTx]

Thanks for sharing the pics of the car and documents. Can you tell me what else was done for the drivetrain package, other than a motor swap? I saw the 700R4 cable, so is it a 4 speed auto too? I'm sure there is a bit of a story of what was going on with the car between 1985 and 1989. Hopefully some of those answers will aid in determining the value. The burning question for me is why was an Elco chosen and was is really THE test car or just a customer car which had a bit of fine tuning to make the customer 100% happy?