Where can I get the transmission support bar.

Your best bet is to find a pick-your-own-parts salvage yard. If you're between Ohio and southern Georgia, do a search for "Pull-A-Part". I've been to 16 of their 23 yards. All are very clean and well-organized. Employees and customers are very friendly and parts are real inexpensive. You pay your buck, throw your tool box in one of their wheel barrows, and you can spend all day there. You can search for vehicles like yours on their web site. The cars are all well-supported off the ground so you can safely and easily crawl underneath.