2.25" mandrel bent seems pretty extreme for a 1.8L that's not really worked.
If you wanted mandrel bent I'd go for 2", otherwise just get 2.25" press bent.
But all in all +1 to what Drakos said, mandrel bent is throwing cash down the drain unless you're planning on spending serious $$ working the motor,etc but by all means if you've got plenty of cash to spare and are hell bent on doing it dont let us stop you!