Howdy and greetings from New Zealand. I have a 90 that I bought with a very good 3 liter engine that I want to put in it. The 3 liter was attached to an auto but I want to use the manual box from the 90. The boss, or what ever it is, on the end of the crank has a larger diameter by about quarter of an inch than the locating ring on the 90 flywheel but otherwise the bolt patterns seem identical. Has anyone ever done such an install and if so could you tell me how you went about it.