Help with Cebu Papers..

I wanted to buy a 2nd hand car from cebu(but the car came from japan), but there are rumors that cars that came from there are underpaid in tax.. im from bulacan, i would like to transfer the ownership and place of registration here in bulacan right after i bought it..

can anyone help me kung ano first step ko para malaman ko that the car im getting has no tax problems? the seller had emailed me a copy of OR/CR

i want to make sure that the car has no paper problems before i buy it..

thanks in advance to anyone who can help..