If change physical engine then it should not be more than 25% of the originalso these engine swap like to 4g15, 4g91, 4g92 + stroker kits will be approved by jpj? from what a friend of mine told me is that if your cc increase by 30% and not more then jpj will approve. he has a ke20 with 1.6l 4age 20v and an iswara with 2.0 vr4 turbo
If its stroker kit, don't need to go JPJ as you are using back the same block