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I am transplanting a 3.1 L from a 1991 Firebird to s sickly 1990 Wrangler that currently has a 2.5 engine. Will the flywheel from a 1991 Sunbird w/ 3.1 engine transfer. And what is the dimension. The flexplate from the doner 3.1 measures 12.5 inches. AutoParts Warehouse says it won't because their charts don't say it will. 