Do you think it is possible to put turbo on a 1998 V70?? If so, which product would you recomend?

Yes this has been answered many times over before. Do a little SEARCHING. If not here on other forums such has Volvospeed.com

Anyways you can, but it isn't worth it.

1. It will take a lot of money

2. It will take many parts to complete and do it right.

Your best bet is to sell your car and buy a turbo model with the money you get from selling your car.