If you are willing there are several books on the topic. Here is one with great reviews .https://www.amazon.com/Build-Max-Performance-Mitsubishi-4G63t-Engines-ebook/dp/B08DL4LNGC/ref=sr_1_1?dchild=1&keywords=Mitsubishi+modification&qid=1614290273&s=books&sr=1-1
However your best bet although pricey would be contacting professionals in your area.