hi to all sifu. im damn damn confuse of changing my 4G15P engine into bigger n power engine. 1st of all i like 4G63T but JPJ never allow to put that into wira 1.5. so i decide to put GSR 1.8 but some frend said GSR not enough power. im damn confuse.

although i got lubang in JPJ to put 4G63T engine, but my chassis will not bear the monster power. wat should i do to make my chassis stronger n tougher. wat is spot welding, chassis reinforced n etc. How much does it cost actually?? wher...