Here is a 61 Starliner that we just completed a custom Fast Track chassis for. We were able to build a driect replacement chassis that greatly lowered the ride height, can handle the John Kaase Boss 429 motor, accomodated a 12" wide rear wheel, and utilized all of the stock mounting locations with no modifications.
We have been uploading all of our custom chassis to a new section on our web site dedicated to the unique, custom, and 1-off chassis builds that we have done over the years.
http://www.roadstershop.com/custom-chassis
Original car
Original chassis
Mocking up the body on the new frame in order to test fitment
Completed chassis