Prius alpha 7 seater JDM overhaul

Dear Folks , this is a big one for me ,

I bought this prius in 2014 for $19,400, it was 31000 KM driven , now its 185000 KM .
the rings on the engine are weak , consumes oil , I have the option of importing used engine , HV battery , ABS , Exhaust and other parts from a salvaged Prius alpha in Japan , expected cost of imported parts is around $3000 to $4000 ,
i can sell this prius for $15000 and then i have the option of buying the used prius 2014 , 2015 for $22000

I am wondering if i swap the engine , HV battery and keep it for 4 more years , or sell it and buy the newer model ?( which are driven 30000KM in Japan ) ,
I like my prius and provided the options we have for my budget , i couldn't have any better car like Rav 4 etc , we have limited options of vehicles available in Pakistan ,

 

well the Japanese Vendors can be trusted , but as you put it , these apprehensions are the reason i posted it here to get may be some one who already did a job like this , lets see if some one from New Zealand or Australia has imported parts like used engine or HV battery from Japan and are happy .

 

Yes you are right , the HV battery is good , but since there will be a shipment , and used HV are for 700 to 1100 US$ , its better to have one in store for that moment , when you need it and its not available , shipment takes about 60 days to arrive to where i live , infact the ABS is also working , but again you never know , the Prius alpha is not manufactured here in Pakistan , hence no parts avilable

 

installation is $300 for all , indeed its a complex one , i couldn't decide myself , car still drives better then local available cars, thats why i decided to keep it for family .

 

yes , i have seen friends buying used car for a very good price Dallas Fort Worth area , we on the other hand are paying too much for even a used one e.g a used prius 2017 with 50 to 70 thousand on odometer is available for $27000 here , which is too much for an old car so mostly consumers would stick to older vehicles .