I am not sure what the budget is, but it would seem to me a second frame built up by you would cost less than just rolling your car to a shop and letting them go at it. You could also look into a Schwartz or Art Morrison chassis built to your specs with suspension and a rear end ready to go. You could have it delivered to your door and not have to take your car anywhere of you can do the mini tub project at home. Just a thought. Best of luck with the project. Post some pics of how it is now please.