Conversion 2.0 gt turbo 204 ps

Hello people.. My brother drives the 173 ps diesel and actually wanted to take over it, but I think it will be more complex and more difficult with the diesel or?? Is there an example example for a lagoon 3 diesel conversion with approx. 250-300 ps?? Therefore I thought of the gt turbo 204 ps.. Would you like to buy one if someone is offered (are very rare at mobile) I am looking for someone here from the forum or in real life who will perform me with a conversion compilation. How do I do this with the 204 ps engine? Pistons Conrod Turbo Krummer Downpipe Aga Larger nozzles(?what) Or would a further optimized megane rs motor be cheaper including installation + cable tree/adjustment hardly?? Another important question has someone or does anyone who has brought a lagoon 3 to about 300-350ps? Would a budget of max 7 000eu ..I know but someone would have to install.. I would only need someone which helps me to collect the right components and most important ones? With whom to vote?? Free Programmable stg?? Which tuner would dare to convert to such a?? Lg