HPBCANADA.COM

I would be worried that customs would not let it in because of emissions

Totally different motor. The one you mention is a twin carb 36 to 37 cubic inch.
https://www.kijiji.ca/v-boat-parts-trai ... nFlag=true

This one is a single carb 42 cubic inch. It looks like PARSUN has copied a lot of this motor. There are lots of parts on ebay that mention both yamaha and parsun in the same listing. Parts for this motor come from different locations in the world. It's hard to tell where the part was originally made and the parts are cheaper than parts for other motors.
It looks like yamaha originally designed this motor to be a twin carb. It has two separate large reed cages and a double carb intake manifold with a single carb mounted on the top with the bottom one covered. The Mercury Sea Pro two cylinder 40 hp is 40 cubic inch with a single carb intake. The two motors likely perform the same....NOW! mount a second carb on the yamaha and it would be a different story.
http://aquamarket-spb.ru/catalog_yamaha ... T300F1.PDF
This parts book was also why I thought the SHORT SHAFT model was new. There are no short shaft parts listed in this parts book.

Anytime we look at 2 cylinder short shaft motors, you really cannot beat the 40 to 60 hp OMC for value and performance!
https://www.kijiji.ca/v-boat-parts-trai ... nFlag=true

Yamaha is full of surprises. They made motors for other countries that we would love to have. We have been looking at Enduro models for parts for the 55 hp two cylinder. NOW I find this model.....normal yamaha...short shaft....power trim....it is a 2003-7 model!
PERFECT!!!
https://i.ebayimg.com/00/s/NjAwWDQ1MA== ... V/$_20.JPG

Here are some used ones
https://water.drom.ru/ulan-ude/engines/ ... 87511.html

https://water.drom.ru/novokuznetsk/engi ... 07896.html

HERE IS THE PARTS BOOK
https://www.megazip.net/zapchasti-dlya- ... etl-782539
We can still buy the decals!....697-W0070-31-00

Here is the 40 hp short shaft
https://water.drom.ru/novokuznetsk/engi ... 50072.html

https://www.kijiji.ca/v-powerboat-motor ... nFlag=true

Looks nice.

Matt told me about this second version of the 40/50 yamaha. The lower unit is different with a better location for the water pick up, it is a turn to shift instead of a push-pull shift, the head is centre plug, the mid is different as are the lower motor mounts. AGREE much nicer than the earlier version.
http://www.sclakes.com/forums/download/file.php?id=2180

https://www.picclickimg.com/d/l400/pict ... -Lower.jpg

I have one of those...but a 20" comes with the single ram 4-stroke style trim. I'm making a 15" out of it for future use.