Mercruiser 190

I am restoring a 81 V-20, the 170 HP Mercruiser was frozen and I got a deal on a 190 HP 470 Mercruiser to replace it. The 190 has to use a different inner plate the inner plate for the 170 HP has the Trim pump mount on a bracket on the inner plate the new plate does not have the bracket so I have to mount it somewhere else. Has anyone else installed the 190 HP Mercruiser to replace the 170 HP? The 190 Hp is supposed to be a much desirable motor because of the alum manifold and the 4" heat exchanger and the 4 barl carb is more reliable. Also any comments on the control cables would help the throttle cable is longer and must cross over the engine then over the value cover to the hook up.
Tom T :o