No problem fitting the AOD,I have a 302 and AOD in my '54 Customline no mods needed it will sit right on the stock trans crossmember use an ANCHOR 2253 mount about $10 at Autozone.Be sure and get the Lokar T.V. cable real easy to use.You will need a 164 tooth flexplate with a 28 oz. balance for the AOD give these guys a call
http://www.kmjent.com/ prices are good.AOD's from 1980-93 are non computer the best donors are 1988-93's with the improved lube mods and valve body.