If the transmission in your 2.6 is the 717430 or 717435 you'll be able to use the transmission from the 190D with the flywheel from the 2.6 all you need to do is swap the yokes on the transmission. But if the transmission in the 2.6 is the 717433 has a dual mass flywheel you won't be able to use the transmission from the 190D unless you buy a single mass flywheel for the 103 engine